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Roto Grip Defiant Edge Bowling Ball

The Defiant Edge bowling ball is great addition to the performance series of Roto Grip products available right here at Roto Grip has been a leading brand name in the bowling industry for many years and continues to provide fine additions in the pro performance line of products such as the new Defiant Edge bowling ball currently selling for $94.99. By purchasing this product you will receive free shipping, free insurance, and absolutely no hidden handling charges courtesy of our company.

Let's look at some technical data:

Product ID: 10354

Brand: Roto Grip

Release Date: 07/10/2012

Perfect Scale®: TBD

Performance: Pro Performance(10)

RG: 2.49

Differential: 0.054

Mass Bias Diff: 0.017

Flare Potential: 7+ Inches (High)

Durometer: 73-75 on D-Scale

Lane Condition: Medium-Heavy

Finish: Polished

Coverstock: Reactive Resin

Coverstock Name: MicroBite Pearl Reactive

Factory Finish: 1500 Grit Polished

Core Type: Asymmetric

Core Name: Paragon (14-16) Triliptic (12-13)

Quality: First Quality

Roto Grip Product Line: HP4

Color(s): Red,Blue,Black

Featuring the same technological advancement found in the Defiant, the unique
elliptical shape of the Paragon core defines predictability of axis migration and allows
you to perfectly match up your ball reaction to the condition at hand.

The MicroBite pearl reactive coverstock uses extremely small structured
additives to help smooth the transitions while maintaining entry angle at the
pocket. This helps you create better pin action while reducing oil sensitivity that
can send your ball through the break point.

The new Defiant Edge is the ideal complement to the original Defiant, providing the
perfect combination of skid-hook-roll even on medium-heavy oil. Be sure to keep your
original Defiant on hand for those heavy oil situations.

Some surface maintenance tips to keep the Defiant Edge ready for competition are:

Use a clean, dry Storm microfiber towel during competition...

Before next session, use Storm Reacta Clean and spray liberally over the entire surface of the ball...Rub your hands over the surface of the ball in a scrubbing motion for 15-20 seconds...Towel off the ball until dry.....

Every 10 Games - Re-polish surface with Storm Reacta Shine.....

Every 30 Games - Scuff surface with Abralon and re-polish with Storm Reacta Shine...

Every 60 Games Ball is due for full resurface process.... has become the No. 1 “e-tailer” of choice for bowling equipment by the consumers of America. Ordering is an easy process by following simple online instructions. Thanks for visiting

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