StrikeStackBall library
Roto Grip Black Grenade bowling ball

Roto Grip

Black Grenade

Released January 1985

Light OilEarly HookTraction
Hook strength
2/10
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Specs

Coverstock
Solid Urethane Urethane Solid
Core
Grenade Symmetric
RG
2.550
Differential
0.020
Factory finish
1000 Sanded
Released
January 1985

The oil, hook and strength labels are StrikeStack's estimate from the published specs, not the manufacturer's rating. Specs provided by bowwwl.com.

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