StrikeStackBall library
Hammer Black Widow Black Solid Urethane bowling ball

Hammer

Black Widow Black Solid Urethane

Released October 2021

Medium OilEarly HookTraction
Hook strength
7/10
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Specs

Coverstock
Performance Urethane Urethane Solid
Core
Gas Mask Asymmetric
RG
2.500
Differential
0.058
Intermediate diff (mass bias)
0.016
Factory finish
1000 Siaair
Released
October 2021

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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