Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Storm Norm Duke Clear
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Storm Clear Storm Teal
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Roto Grip Jester Clear Polyester
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Roto Grip Cosmos
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|---|---|---|---|---|
| Brand | Storm | Storm | Roto Grip | Roto Grip |
| Line | Ice | Ice | EP | EP |
| Coverstock | Poly Clear | Clear Polyester | Clear Poly | Clear Poly |
| Cover type | Polyester | Polyester | Polyester | Polyester |
| Core | Cube | Cube | 3 Piece | 3 Piece |
| Core type | Symmetric | Symmetric | Symmetric | Symmetric |
| RG | 2.800 (12 lb) | 2.800 (12 lb) | 2.690 (16 lb) | 2.680 (16 lb) |
| Diff | 0.018 (12 lb) | 0.020 (12 lb) | 0.006 (16 lb) | 0.006 (16 lb) |
| Int. diff | — | — | — | — |
| Factory finish | 3500 Grit Polished | 3500 Grit Polished | 3500 Grit Polished | 3500 Grit Polished |
| Lane condition | — | — | — | — |
| Flare potential | Low | Low | Low | Low |
| Reaction | — | — | — | — |
| Color | Clear / Blue | Teal / Black | Bichrome-Black / Red | Sky / Admiral / Teal |
| Release date | April 10, 2026 | — | October 18, 2024 | July 17, 2026 |
| Status | Current | Current | Current | Current |
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