Urethane coverstock bowling balls

Swag Buffalo Bowling Ball. $ 189.95 Select options. Compare. 1. 2. Next. We Have Taken the Hassle Out of Trying to Find the Bowling Ball You're Looking For. Easily Browse Through Each Category to Find the Ball That You Are Looking For. Find the bowling ball that you are looking for based on the coverstock material.

2. Urethane Coverstock: Urethane bowling ball coverstock is a more durable option. First introduced in the 1980s, the Urethane coverstock was remarkable and innovative for everyone. Of course, Urethane is the base and main material for this type of coverstock. A regular urethane ball ensures a great entry angle to go into the pockets. It offers ...Abralon Pad 3000 Grit. $8.99. (18) Description Reviews (38) Videos (5) Drilling Layouts (5) The best way to get through dry lanes is to drop the hammer and power through with the all-new Hammer Purple Pearl Urethane. Utilizing the high-RG/low differential LED core, this ball produces a smooth arc from start to finish on the toughest of patterns.Are you wondering how to turn a bowl into a sink? Check out this article to learn how to turn a bowl into a sink from HowStuffWorks. Advertisement Are you planning to remodel or re...Coverstock: Urethane Pearl; Finish: 500/1000/2000 Siaair Micro Pad; Reaction: Smooth Arc; RG: 2.65 (15# ball) ... The gold standard for urethane bowling balls is back with the purple pin edition, featuring the same classic weight block and coverstock that has become a fan favorite over the years. I drilled this one 50 x 3 ¾ “ x 25, mimicking ...Jan 18, 2021 · Do Urethane Bowling Balls Absorb Oil? No. A true urethane bowling ball is built to resist the absorption of oil. It was the cover stock of choice for a lot of bowlers in the 80s because it offers more hook potential and pin carry than a plastic bowling ball, but it was slowly replaced in market share by reactive resin bowling balls in the 90s. Urethane coverstocks bring a reliable and steady performance to the bowling lane. Here are three pros and cons in a nutshell: Pros: Durability and Steady Roll: Urethane balls are known for their durability, providing a consistent and steady roll. This reliability is particularly advantageous for bowlers seeking a dependable performance.

Storm Mix Urethane Bowling Ball. Storm Mix Urethane Bowling Ball, Black/White, 16 lb. Country Of Origin: United States. Product Type: Sporting Goods. Item Package Dimensions: 22.606 L X 22.352 W X 22.098 H (Cm) Item Package Weight: 7.574 Kilograms. View Latest Price.These balls allow league and tournament bowlers the ability to “ball-down” from reactives in light or short oil or in burn conditions. Because urethane equipment hooks earlier and covers fewer boards than reactive equipment urethane balls provide exceptional control of one’s breakpoint. Hammer has been the undisputed urethane champion in bowling since the Purple Pearl Urethane’s introduction, and we are excited to carry that title through the new phase of harder urethane bowling balls. Since the PBA announced its rule change, only allowing urethane balls to be 78D or harder, our chemists and lab rats have been working hard producing the now famed NU Blue Hammer and the new ... Compared to Plastic, Urethane coverstock technology increases traction and hooking action in the oil, and Urethane coverstocks can be sanded or shined to create large differences in hook potential. This ball is recommended as a first high-performance ball. Buy Brunswick Groove Blue Urethane Bowling Balls with FREE SHIPPING and NO …Hammer has taken the top-selling Hammer balls of the last three years and combined them into one exciting ball. They’ve paired it with the incredible looking Black Widow Urethane Pink Pearl. The Pink Pearl was extremely popular as a reactive Black Widow, and Hammer expects it to kill since it now uses the Purple Pearl Urethane cover formulation.This is a very popular bowling ball because of its coverstock that is so hard and can produce friction with the surfaces of lanes. As it gives you superior performance, so it is a little bit expensive. The price of Urethane bowling balls ranges from $75 to $160. Urethane Pearl Vs.

Urethane is a preferable coverstock to be used even on oil surfaces, as an urethane bowling ball has oil resistance and absorbs neither water nor grease. Performance Advanced players know how to demonstrate the maximum attractive action with urethane bowling balls, especially on superior dry lanes.Urethane coverstock bowling balls were first introduced in the market circa 1980. The urethane ball has greater angle of entry into the pocket and covers more boards on a given lane condition than does a plastic ball. Urethane is the base material used on other classifications of coverstocks such as reactive resin, hybrid, and particle coverstocks.Additionally, urethane balls produce less friction on the lane than reactive resin balls, making them more suitable for drier lanes. An important note is that urethane has the lowest absorption rate of all three cover technologies, absorbing little to no oil. MicroCell Polymer (MCP) bowling balls, such as the Tank Yellowjacket , are a new ...Nov 27, 2023 ... Hit that LIKE and SUBSCRIBE button and click the bell to be notified when a new video drops!!! Follow TV BOWLING SUPPLY on all social media!1. Pearl Coverstock. Pearl coverstocks are known for their glossy appearance, resembling the luster of a pearl. These coverstocks feature a polished finish, which allows the ball to glide smoothly across the lane surface. The pearl surface creates less friction, resulting in a longer skid phase before the ball begins to hook.Storm IQ Tour 78/U Bowling Ball Color: Crimson Coverstock: Controll 78 Solid Urethane Weight Block: C3 Centripetal Control Core Factory Finish: 500-grit Abralon Flare Potential: Medium Radius of Gyration (RG): 16lbs - 2.49;...

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Storm. Mix Pink/Black. $89.99. (0) Description Reviews (9) Videos Drilling Layouts (8) Make the pins fly with the new Storm Mix Purple/Silver! The Mix is perfect for any bowler who needs a spare ball that can also perform as a strike ball on very dry lane conditions. This Mix features a highly polished urethane coverstock which will hook a bit ...Apr 8, 2023 · Ebonite bowling balls generally have either a urethane or a reactive resin coverstock. Urethane is a more durable material that is better suited for dry lanes, while reactive resin is more responsive and suitable for oily lanes. Featuring the Urethane Pearl 78D coverstock, finished at 500 Siaair Micro Pad, this ball will provide a smooth arcing motion that you've come to expect from urethane bowling balls. Inside, the LED symmetric core, as featured in the Purple Pearl Hammer Urethane, will provide a clean, reliable motion on drier lane conditions. By: bowlingball.com, Originally Posted: 11/21/16; Updated: 1/3/2022 Understanding the hybrid bowling ball coverstock will give you, an advanced and skilled bowler, a very useful tool in your arsenal joining both the solid, shiny reactive coverstocks and the pearl reactive coverstock. The Hybrid coverstock has been designed to …The coverstock is the real key for any bowler. The simple differences between solid reactive, pearl reactive, and hybrid coverstocks can help you select your next bowling ball. The core design and symmetry of a given ball are also points for consideration, but the coverstock is the real key in getting a desirable ball reaction.

A bowling ball is made of a Coverstock (outer shell) and Weight Block (core) Coverstocks are made of plastic, urethane, reactive resin, or particles allowing for different levels of friction and reaction with the bowling lane. Weight Blocks are either High Mass type (limits rolls) or Low Mass type (promotes heavier rolls)The urethane solid coverstock retains energy like no other urethane bowling ball on the market, delivering pin-splitting power and a long-lane game in the industry. This ruthless pin-hitter is a favorite among novices and experts alike.Urethane coverstock bowling balls were first introduced in the market circa 1980. The urethane ball has greater angle of entry into the pocket and covers more boards on a given lane condition than does a plastic ball. Urethane is the base material used on other classifications of coverstocks such as reactive resin, hybrid, and particle coverstocks.Reactive Coverstocks Utilizing different types of reactive coverstock bowling balls can greatly benefit your game by helping you navigate various lane conditions and maximizing your scoring potential. When purchasing a bowling ball, you’ll find a range of options including solid, pearl, and hybrid reactive coverstocks. Understanding the …The Hammer Purple Pearl Urethane bowling ball has gained popularity among bowlers for its exceptional control and versatility. With its unique Hammer Pearl Urethane coverstock and LED Core design, the Purple Pearl delivers a smooth and controllable ball motion on various lane conditions. In this review, we will explore the features, performance, and …Storm. Pitch Black. $132.99. (23) Description Reviews (17) Videos (4) Drilling Layouts (8) Make a clean getaway on tricky lanes with the Storm Pitch Blue! The Capacitor core makes its triumphant return with the Pitch Blue. Featuring a medium-high RG and a lower differential, this ball is all about control and working on tricky conditions.Just enough time to contemplate the infinite. Early in the second quarter of an epic Super Bowl face-off between the New England Patriots and the Philadelphia Eagles, everything we...The Black Widow Urethane combines a solid urethane coverstock with what is arguably the most popular core design ever from Hammer. The high-flaring Gas Mask core is unchanged from the other Widow line releases, with an RG of 2.50″, a total differential of 0.058″, and an intermediate differential of 0.016″. The dull urethane cover on this ...Types of Bowling Balls. Bowling balls are classified based on their coverstock, which refers to their outer surface. Plastic, urethane, reactive resin, and proactive bowling balls are the four types most commonly used today. Each coverstock exhibits a range of reactions to the lane conditions, which can dramatically impact your bowling score.

Put gentle dish soap and water no warmer than 140°F in a large and durable bucket to hold your ball. Let the ball soak for 15 to 20 minutes and spin it once and awhile. Wipe it down with a soft sponge, paying close attention to difficult areas. Take it out of the bucket and then wipe it dry with a microfiber towel.

Compared to Plastic, Urethane coverstock technology increases traction and hooking action in the oil, and Urethane coverstocks can be sanded or shined to create large differences in hook potential. This ball is recommended as a first high-performance ball. Buy Brunswick Groove Blue Urethane Bowling Balls with FREE SHIPPING and NO Hidden ... Urethane is a preferable coverstock to be used even on oil surfaces, as an urethane bowling ball has oil resistance and absorbs neither water nor grease. Performance Advanced players know how to demonstrate the maximum attractive action with urethane bowling balls, especially on superior dry lanes. Polyester or plastic bowling balls are factory finished with a polished and shiny surface which further indicates the longest skid potential and least amount of back end ball reaction of all choices of bowling balls in today's market. Urethane coverstock bowling balls were first introduced in the market circa 1980 by AMF and were known as the ... Oct 26, 2020 ... Get all of your bowling wants and needs at BowlerX.com Follow JR's new podcast here https://anchor.fm/jr-raymond Want Lessons or help from ...A bowling ball is made of a Coverstock (outer shell) and Weight Block (core) Coverstocks are made of plastic, urethane, reactive resin, or particles allowing for different levels of friction and reaction with the bowling lane. Weight Blocks are either High Mass type (limits rolls) or Low Mass type (promotes heavier rolls)Meet Storm's IQ Tour 78/U! Storm's latest release to the IQ Tour line is new, different, and it's urethane. IQ TOur 78/U features a newly formulated Controll 78 Solid urethane coverstock, finished at 500-Grit Abralon. This PBA approved cover will offer smooth controllable predictability on the lanes. Inside, the C3 Centripetal Control symmetric ...In the 90s, urethane balls added a new coverstock option to add more impact to their movement. From 1993 onwards, resin was used to produce more reactiveness for the ball. Today, there are four types of balls based on material, namely plastic coverstock, resin, hybrid and urethane bowling balls. How Are Bowling Balls …Here’s a quick refresher on how to pick the right size stability ball and mix up your fitness routine with exercises that target every major muscle group. We include products we th...Urethane is the base material used for other classifications of coverstocks such as reactive resin, hybrid, and particle coverstocks. Urethane balls match well on dry lanes or on … The Rubicon™ UC3 (Ultimate Concept 3) takes Tour Level performance to a whole new level. We first focused on core specifics and decided that the mildly asymmetric Rondure™ Core was the ideal core shape in order to generate adequate flare. From there we engineered the Tour-ethane™ Pearl coverstock to maximize performance and control on ...

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One of the best ways to landscape a yard quickly is by planting balled and burlapped trees and shrubs. Read more to find out how. Expert Advice On Improving Your Home Videos Latest...A new spin on a old classic, the Attitude Control features the Urethane Pearl reactive coverstock, finished at 500/1000 Siaair Micro Pad. You can expect this 'Tude to provide controllable length with a true urethane reaction on medium to dry lane conditions. Inside, the Contra symmetric core surrounded by DynamiCore technology, as previously ... Remarkable capacitor core offers predictable ball motion. Cons. Has a slow reaction and is thus not be suitable for bowlers who bowl at a high speed. Not the best urethane bowling ball for oily lanes. 3. Hammer Black Widow Urethane Bowling Ball. There are many things about the Hammer Black Widow that appeal to me. Storm. Pitch Black. $132.99. (23) Description Reviews (17) Videos (4) Drilling Layouts (8) Make a clean getaway on tricky lanes with the Storm Pitch Blue! The Capacitor core makes its triumphant return with the Pitch Blue. Featuring a medium-high RG and a lower differential, this ball is all about control and working on tricky conditions.Reactive bowling balls are made of a mixture of resin and urethane. The urethane provides the ball with a hard outer shell, while the resin enhances the ball’s grip on the lane. This combination of materials gives the reactive ball its unique properties and makes it one of the most popular types of balls on the market.This combination offers incredible control the length of the lane on light to medium oil. Color: Purple Pearl. All colors do vary somewhat from the picture shown. Core: LED (modified for 14#) (different core for 12-13#) Coverstock: Urethane Pearl. Finish: 500/1000/2000 Siaair Micro Pad. Reaction: Smooth Arc.One of the best ways to landscape a yard quickly is by planting balled and burlapped trees and shrubs. Read more to find out how. Expert Advice On Improving Your Home Videos Latest...Some examples of mechanical energy are a hammer, a bowling ball, a drawn bow and arrow and a moving volleyball. Mechanical energy is defined as the energy an object has either due ...Polyurethane is one of the most durable and popular coverstock materials for a bowling ball. Urethane bowling balls are made of polyurethane, which provides the ball with a frictional capability when in contact with the lane surface. This makes Urethane bowling balls great for hooking and getting into splits.Do Urethane Bowling Balls Absorb Oil? No. A true urethane bowling ball is built to resist the absorption of oil. It was the cover stock of choice for a lot of bowlers in the 80s because it offers more hook potential and pin carry than a plastic bowling ball, but it was slowly replaced in market share by reactive resin bowling balls in the 90s.New Bowling balls are essentially all poly-urethane based products. These products include additive materials and curing process variations, particularly for the coverstocks, yielding calculated designs in the final bowling ball construction. The industry refers to various coverstock blends, however, in the following way: plastic, urethane ... Storm Mix Bowling Ball Black/White Color: Black/White Coverstock: U1S Pearl Urethane Weight Block: Traditional 3 Piece Core Factory Finish: 3500 Grit Polished Flare Potential: Low Radius of Gyration (RG):2.69 Differential (Diff):0... ….

Abralon Pads 7 Pack (1 of Each Grit) The best way to get through dry lanes is to drop the hammer and power through with the all-new Hammer Purple Pearl Urethane. Utilizing the high-RG/low differential LED core, this ball produces a smooth arc from start to finish on the toughest of patterns. When your competition starts to sweat in the dry, put ...The urethane bowling balls are available for purchase. We have researched hundreds of brands and picked the top brands of urethane bowling balls, including Hammer, Storm Bowling Products, Storm, 900 Global, Pyramid. The seller of top 1 product has received honest feedback from 875 consumers with an average rating of 4.6.Polyurethane is one of the most durable and popular coverstock materials for a bowling ball. Urethane bowling balls are made of polyurethane, which provides the ball with a frictional capability when in contact with the lane surface. This makes Urethane bowling balls great for hooking and getting into splits.Urethane Pearl Coverstock. Pearl urethane balls can easily stick to the surface of the lane more than solid urethane. It is because the composition includes …Jun 3, 2020 · Urethane Coverstock. Urethane coverstock is the bowling ball material that is considered to have started the “hook revolution”. The material was used first in the ‘80s when manufacturers were looking to achieve a higher hook potential in comparison to the more limited straight reaction they were getting from polyester balls. It happens so fast that most people won't even realize why their ball isn't reacting properly/. Pearl coverstocks. You're dead on. Skid well through the heads (first 15 feet of the lane) while still being able to read the pattern and react to the friction. Hybrid is usually a combination of pearl and solid. A hybrid coverstock is in between dull and shiny in appearance and is a good bowling ball to start off with on medium oil patterns. A benchmark bowling ball is the bowling ball you are most comfortable with and you can easily predict its reaction on the lane. Short Oil Patterns (37 Feet and Under) Shiny coverstock bowling balls and …It's easier than you think. Tonight is the night: Super Bowl 54 is happening at Hard Rock Stadium in Miami, Florida, with the San Francisco 49ers taking on the Kansas City Chiefs f...Swag Buffalo Bowling Ball. $ 189.95 Select options. Compare. 1. 2. Next. We Have Taken the Hassle Out of Trying to Find the Bowling Ball You're Looking For. Easily Browse Through Each Category to Find the Ball That You Are Looking For. Find the bowling ball that you are looking for based on the coverstock material. Urethane coverstock bowling balls, Reactive resin is more aggressive than urethane bowling balls. If you are aiming for a potential strike, opting for reactive resin will be a good option. 4. Reactive Resin ... However, one of the most crucial aspects of bowling …, 6 Of The Best Urethane Bowling Balls. 1. Hammer Black Widow Urethane Bowling Ball. No products found. The Hammer Black Widow’s many iterations are among the most trusted and well-reviewed bowling balls in …, Swag Buffalo Bowling Ball. $ 189.95 Select options. Compare. 1. 2. Next. We Have Taken the Hassle Out of Trying to Find the Bowling Ball You're Looking For. Easily Browse Through Each Category to Find the Ball That You Are Looking For. Find the bowling ball that you are looking for based on the coverstock material. , Mar 31, 2017 · Most bowling ball experts today are in agreement that the coverstock is the most important part of the bowling ball. The coverstock is responsible for somewhere in the vicinity of 60% to 80% of a bowling ball’s on-lane performance (with the remaining 20% to 40% being attributed to the ball’s core, its various mass properties, and the ball ... , Polyurethane is one of the most durable and popular coverstock materials for a bowling ball. Urethane bowling balls are made of polyurethane, which provides the ball with a frictional capability when in contact with the lane surface. This makes Urethane bowling balls great for hooking and getting into splits., A strong 3 or 4 ball arsenal for most bowlers would include: 1 urethane solid ball for drier lanes and demanding control shots. 1 reactive resin solid ball for medium-heavy oil patterns. 1 reactive resin pearl ball for lots of length and backend pop off dryer boards. 1 plastic/urethane spare ball for maximizing deflection on single pin spares., The ads weren't that original, so what made them so popular? One day after the NFL Super Bowl, which some are now calling the Crypto Bowl, two of the big game’s ads for cryptocurre..., Urethane coverstock bowling balls were first introduced in the market circa 1980. The urethane ball has greater angle of entry into the pocket and covers more boards on a given lane condition than does a plastic ball. Urethane is the base material used on other classifications of coverstocks such as reactive resin, hybrid, and particle coverstocks., Storm Mix Bowling Ball Black/White Color: Black/White Coverstock: U1S Pearl Urethane Weight Block: Traditional 3 Piece Core Factory Finish: 3500 Grit Polished Flare Potential: Low Radius of Gyration (RG):2.69 Differential (Diff):0... , The ball also has 3.5 times more coverstock than your average bowling ball. That means it will withstand a ton of punishment and provide plenty of hitting power. ... But if you’re just starting, we recommend playing it safe with a less challenging ball – like a plastic or urethane ball. They will be much easier to control, and you’ll be ..., A suitable bowl to feed and hydrate your dog along the way is necessary for keeping them happy and energized on the hiking trail. We may be compensated when you click on product li..., Ball Specs: 15 lbs, 7.2 oz, drilled with cg in the palm, no weight hole. Picked this up on Ebay in NIB condition for $45 including shipping This old school urethane is the best light oil ball I've ever thrown, also great for 10 and 6 pin spares. I needed a ball for the 3rd game in my 2nd shift league when the lanes are fairly cooked., And just like the Purple, every competitive bowler will have to have this ball in their arsenal. BALL SPECS. PERFORMANCE Upper Mid; PART NUMBER 60-106698-93X; COLOR Pink Pearl; CORE Gas Mask; CORE TYPE Asymmetric; COVERSTOCK Urethane Pearl; COVER TYPE Pearl Urethane; FINISH 360, 800 Siaair Micro Pad; WEIGHTS 16-12 Pounds; LANE CONDITION Medium oil , Jan 5, 2024 · Table of Contents. List of Best Urethane Bowling Balls. 1 – Hammer Purple Pearl Urethane Bowling Ball. 2 – Hammer Black Widow 2.0 Bowling Ball. 3 – Storm Pitch Black Solid Urethane Bowling Ball. 4 – Hammer Scorpion Bowling Ball. 5 – Storm Mix Urethane Bowling Ball. , The Pitch Black is the ultimate choice for wood lanes or shorter oil patterns. The Controll Solid Urethane is porous and predictable. The Capacitor Core helps regulate flare potential; pure predictability at its finest. Release …, Pathogen Blue Dot 2024 DEAL. $89.99. (17) Description Reviews (1) Videos. Leave it to Ebonite to add particle to the best-selling, entry-level urethane ball of all time and still keep it the best value in bowling! The added traction from the particles imbedded in the urethane cover ensures the Gyro namee will live on. And on., Motiv. Top Thrill Hybrid. $109.95. (2) Description Reviews (9) Videos (4) Drilling Layouts (5) Take control of your game with the Purple Tank from MOTIV. Featuring the Microcell Polymer (MCP) solid urethane coverstock and finished at 1000 Grit LSS, the Purple Tank will dig into the lane with an impressive amount of traction on a wide variety of ..., Hammer has been the undisputed urethane champion in bowling since the Purple Pearl Urethane’s introduction, and we are excited to carry that title through the new phase of harder urethane bowling balls. Since the PBA announced its rule change, only allowing urethane balls to be 78D or harder, our chemists and lab rats have been working hard …, Max Tack Bowling Ball Coverstock Cleaner 8 oz. 12Bagger Top Form Positioner Right Hand Glove. Hammer Black Widow 3.0 Silicone Grip Shammy. Close; Apparel. By Brand. 900 Global Apparel; ... Urethane bowling balls are the perfect choice for bowlers who want to play with a consistent ball. We offer urethane bowling balls in many different weights ..., The ball also has 3.5 times more coverstock than your average bowling ball. That means it will withstand a ton of punishment and provide plenty of hitting power. ... But if you’re just starting, we recommend playing it safe with a less challenging ball – like a plastic or urethane ball. They will be much easier to control, and you’ll be ..., Coverstock is the outer layer of a bowling ball that comes in contact with the lane. It is typically made of polyester, urethane, or rubber. The type of coverstock you use will determine how the ball reacts when it hits the lane. Coverstock comes in a number of diverse materials, and all of them react in a different way on the lane. , Aug 23, 2019 ... Comments69 ; When You Should Use Urethane Or Reactive Bowling Balls? Matt Sanders · 10K views ; IS URETHANE TRULY FOR EVERYONE?? | Low Rev Bowler | ..., Our Research and Development team has worked hard to develop the next breakthrough in cover technology. After pouring and throwing hundreds of bowling balls with dozens of new base reactive urethane formulations combined with a wide variety of chemical components and additives, our ball team has created something exceptional – the new …, Storm IQ Tour 78/U Bowling Ball Color: Crimson Coverstock: Controll 78 Solid Urethane Weight Block: C3 Centripetal Control Core Factory Finish: 500-grit Abralon Flare Potential: Medium Radius of Gyration (RG): 16lbs - 2.49;..., Meet Hammer's Nu Blue Hammer ball. Hammer's latest creation, Nu Blue Hammer is sure to turn heads. Featuring a newly formulated NOT URETHANE coverstock, this unique blend finished at 500/1000 Siaair Micro Pad will provide "urethane-like" reaction on medium to dry lane conditions. Inside, the LED symmetric core, as made famous by the Purple ..., This Rice Bowl Southwestern Style is perfect for meal prep or quick weeknight meals. Use your choice of protein and vegetables, and any leftover cooked grain. Prep time: 15 minutes..., , Propel · Hammer Black Pearl Urethane · IQ 78/U · Hammer Purple Pearl Urethane · Pitch Black · Zen U · Black Widow Pink Urethane · M..., Going away for a few days? Here's how to convert an ordinary pet bowl into a self-watering bowl. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View All ..., GPS Navigational Urethane Pearl: Coverstock Type: Pearl Urethane: Core Name: SG 19.5 Asymmetric: Core Type: Asymmetric: Color: Gold Urethane Pearl: Perfect Scale: ... With ever changing variables within the sport of bowling, (e.g., lane conditions, ball speed, rev rate) this technology allows any bowler, from stroker to two-handed, to …, Controll 78 Urethane Coverstock: Compliant with PBA® regulations, this coverstock offers a 78 hardness rating and excels on shorter oil patterns. Optimal for Medium Oil: Designed for medium oil lane conditions, this bowling ball ensures you stay in control. Elevate your game with the Storm IQ Tour 78-U Bowling Ball., Storm IQ Tour 78/U Bowling Ball Color: Crimson Coverstock: Controll 78 Solid Urethane Weight Block: C3 Centripetal Control Core Factory Finish: 500-grit Abralon Flare Potential: Medium Radius of Gyration (RG): 16lbs - 2.49;..., Jun 3, 2020 · Urethane Coverstock. Urethane coverstock is the bowling ball material that is considered to have started the “hook revolution”. The material was used first in the ‘80s when manufacturers were looking to achieve a higher hook potential in comparison to the more limited straight reaction they were getting from polyester balls.