StrikeStack
Ball library
Brunswick Siege bowling ball

Brunswick

Siege

Released July 2009

Heavy OilEarly HookContinuous
Hook strength
10/10

Specs

Coverstock
Propel Solid Solid Reactive
Core
MACE Low RG Asymmetric
RG
2.474
Differential
0.056
Intermediate diff (mass bias)
0.030
Factory finish
1000 Abralon
Released
July 2009

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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