What lane conditions is the Roto Grip Perfect Gem made for?
Roto Grip Perfect Gem Bowling Ball
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Open Oct 08, 2026 - 02:18 PM
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Staff Answer
Oct 08, 2026 - 02:18 PM
Roto Grip lists it for medium-heavy to heavy oil, and it sits at the top of the Roto Grip bag as an HP4 asymmetric for the freshest, heaviest volume. Leave the 2000-grit box finish for the strongest reaction, have it sanded lower for more traction, or have it polished for a cleaner, longer read when the oil drops. As the lanes transition, the page suggests stepping down to the HP3 Wicked Gremlin or a cleaner piece.
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Roto Grip Perfect Gem Bowling Ball
What should I know about the Perfect Gem? • Asymmetric GEM + A.I. Core: low 2.49 RG and a massive .057 differential for heavy flare • All-new nano-free E-R1 Solid Reactive cover at a 2000-Grit Abralon finish • The cleaner, stronger, more continuous evolution of the Gem for medium-heavy to heavy oil
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