Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Hammer Axe - Steel Sparkle
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Roto Grip Cosmos
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Roto Grip Jester Clear Polyester
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Hammer NU 2.0
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|---|---|---|---|---|
| Brand | Hammer | Roto Grip | Roto Grip | Hammer |
| Line | — | EP | EP | Mid |
| Coverstock | Polyester | Clear Poly | Clear Poly | NU Active |
| Cover type | Polyester | Polyester | Polyester | — |
| Core | 3 – Piece Pancake | 3 Piece | 3 Piece | LED |
| Core type | — | Symmetric | Symmetric | Symmetric |
| RG | 2.650 | 2.680 (16 lb) | 2.690 (16 lb) | 2.586 |
| Diff | 0.020 | 0.006 (16 lb) | 0.006 (16 lb) | 0.027 |
| Int. diff | — | — | — | — |
| Factory finish | Powerhouse™ Factory Finish | 3500 Grit Polished | 3500 Grit Polished | 500, 2000 Siaair Micro Pad |
| Lane condition | — | — | — | Light oil – Medium oil |
| Flare potential | — | Low | Low | — |
| Reaction | — | — | — | Strong arc |
| Color | Steel Sparkle | Sky / Admiral / Teal | Bichrome-Black / Red | Matte Grey |
| Release date | — | July 17, 2026 | October 18, 2024 | November 20, 2025 |
| Status | Retired | Current | Current | Current |
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