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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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