Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Hammer Taboo Spare
|
Radical The Spy
|
Hammer Black Widow Spare+
|
Hammer Black Widow Viz-A-Ball
|
|
|---|---|---|---|---|
| Brand | Hammer | Radical | Hammer | Hammer |
| Line | — | Performance Polyester | Spare Ball | Spare Ball |
| Coverstock | Polyester | Textured Polyester | Polyester | Polyester |
| Cover type | Polyester | Polyester | Polyester | Polyester |
| Core | High Mass Bias Gas Mask w/ Flip Block | Asymmetric (DynamiCore) | Gas Mask | Gas Mask |
| Core type | Asymmetric | Asymmetric | Asymmetric | Asymmetric |
| RG | 2.480 | 2.513 | 2.480 | 2.480 |
| Diff | 0.060 | 0.053 | 0.058 | 0.058 |
| Int. diff | — | — | 0.013 | 0.013 |
| Factory finish | 800-800-1000-2000-Polish | 500, 1000 Siaair / Factory Compound / Factory Polish | 500, 1000, 2000 Siaair / Factory Polish | Factory Polish |
| Lane condition | — | — | Light oil | Light oil |
| Flare potential | — | — | — | — |
| Reaction | — | — | Straight | Straight |
| Color | Yellow / Red / Blue | Red / Black | White Diamond | — |
| Release date | — | — | September 17, 2026 | November 19, 2021 |
| Status | Retired | Current | Current | Current |
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