Hammer Black Widow Legend

Hammer Black Widow Legend
The New
Hammer Black Widow Legend gave us a longer slide along with a longer and smoother transition to hook than we expected in addition to a strong and angular back end response… The ball reacted hard off the friction but still had a good controlled reaction… We were impressed with the strong hit of this hammer bowling ball… This was very fast responding bowling ball off the friction and will need dry boards to react when using the out of box finish… We put this in the strong and controlled category of bowling balls… In addition, we used a 5 x 5 drilling layout for testing this bowling ball along with the out of box surface finish, and bowled on a 38ft house pattern when testing this ball…

Description: Hammer is calling to what it is, a legend. The Black Widow Legend takes the proven history of the Black Widow line and turns it up a notch. This is the first ball in this line to use a hybrid coverstock. This ball is aggressive with it’s polished cover and then combine it with popular Gas Mask core to provide awesome movement on the backend that carries through the pins.


– Reaction: Strong to mid-lane with massive backend
– Coverstock: NBT Hybrid
– Core Type: Gas Mask (includes Flex-Resin additive, Ceramix surface process, and Carbon-Fiber outer core)
– Factory Finish: 500, 500, 500, 1000 Abralon with Power House Factory Finish @ 300 RPM Speed
– Radius of Gyration (RG): 2.50**
– Differential (Diff): .058**
– ** RG and Diff are based off of 15 lb. balls
– Hook Potential: High
– Length: Medium
– Recommended Lane Condition: Medium-Heavy Oil
– 3 year manufacturer’s warranty

Our Rating
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Hammer Black Widow Legend

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Bowling Ball ReviewsHammer Black Widow Legend

Roto Grip Sinister

Roto Grip Sinister gave us a medium slide through the heads along with a smoother transition to hook in the mid-lane along with a strong high revving action on the back part of the lane… The Roto Grip Sinister was more of a smoother bowling ball that did give us a nice controlled motion down lane… It seemed to work the best with medium heavy oil patterns… We really liked the motion of this ball…

The Roto Grip Sinister is just mean. The pins and your opponents are going to feel the wrath.
The all-new Cage Core is designed to produce superior midlane all while providing backend continuation. Pair that with the super-strong 76H Hybrid Reactive Coverstock finished at 4000 Grit and you’ve got the perfect ball for long and heavy oil patterns.

Performance: Pro Performance(10) RG: 2.52, Differential: 0.054, Mass Bias Diff: 0.015, Flare Potential: High, Breakpoint Shape: Strong, Controlled Continuation, Lane Condition: Heavy, Finish: Matte, Coverstock: Hybrid Reactive, Coverstock Name: 76H, Factory Finish: 4000 Grit, Core Type: Asymmetric, Core Name: Cage, Quality: First Quality, Roto Grip Product Line: HP4, Color(s): Yellow,Blue,White Release Date 8 – 26- 2014


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Roto Grip Sinister

900 Global Bank Pearl

900 Global Bank Pearl

The Bank Pearl had a long skid with a short and strong transition to hook along with a very strong and angular motion on the back end. This was a very fast response bowling ball and grabs hard on the dry area of the pattern.

The New 900 Global Bank Pearl features the same weight block as the original with a polished pearl cover stock…

Specifications: RG:2.481
Differential: 0.054 Breakpoint Shape: Long and Strong Finish: Polished Coverstock: Reactive Resin Coverstock Name: S74 Reactive Color: Purple / Gold Pearl Core Type: Asymmetric
Core Name: Self Righting Core (SRC)

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900 Global Bank Pearl

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