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Hammer Black Widow Viz-A-Ball bowling ball

Hammer

Black Widow Viz-A-Ball

Released November 2021

SpareNo HookStraight

Specs

Coverstock
Polyester Polyester
Core
Gas Mask Asymmetric
RG
2.500
Differential
0.058
Intermediate diff (mass bias)
0.016
Factory finish
Crown Factory Polish
Released
November 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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