Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Hammer Black Widow Urethane - Original
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Radical Outer Limits Black Hole
|
Radical The Spy
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Ebonite Turbo X NU
|
|
|---|---|---|---|---|
| Brand | Hammer | Radical | Radical | Ebonite |
| Line | — | Reliable | Performance Polyester | Mid |
| Coverstock | Urethane | HK22C+ Solid | Textured Polyester | NU Active |
| Cover type | Urethane | Solid reactive | Polyester | — |
| Core | Gas Mask | Outer Limits Asymmetric | Asymmetric (DynamiCore) | Turbo |
| Core type | Asymmetric | Asymmetric | Asymmetric | — |
| RG | 2.500 | 2.499 | 2.513 | 2.517 |
| Diff | 0.058 | 0.051 | 0.053 | 0.040 |
| Int. diff | — | — | — | — |
| Factory finish | 360/500/500 Abralon | 500, 1000, 1500 Siaair / Factory Compound | 500, 1000 Siaair / Factory Compound / Factory Polish | 500, 1000 Siaair Micro Pad |
| Lane condition | Medium oil | — | — | Light oil – Medium oil |
| Flare potential | — | — | — | — |
| Reaction | Strong Mid-lane | — | — | Smooth and continuous |
| Color | Black | Black | Red / Black | Purple / Grey |
| Release date | — | January 8, 2026 | — | May 14, 2026 |
| Status | Retired | Current | Current | Current |
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