Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Hammer Black Widow Tour V1
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Brunswick Strategy Logic
|
Roto Grip Gremlin Tour-X
|
Brunswick Combat Hybrid
|
|
|---|---|---|---|---|
| Brand | Hammer | Brunswick | Roto Grip | Brunswick |
| Line | Upper Mid | Pro | HP3 | Pro |
| Coverstock | HK22 - Aggression Hybrid | HK22C² - EVO Hybrid | VR1 Hybrid | Alpha Premier Hybrid |
| Cover type | Hybrid reactive | Hybrid reactive | Hybrid reactive | Hybrid reactive |
| Core | Gas Mask Low Diff | Dual Centric | Rondure TourX | Rampart |
| Core type | Asymmetric | Asymmetric | Asymmetric | Asymmetric |
| RG | 2.500 | 2.509 | 2.480 (16 lb) | 2.502 |
| Diff | 0.034 | 0.047 | 0.032 (16 lb) | 0.051 |
| Int. diff | 0.016 | 0.016 | 0.010 | 0.019 |
| Factory finish | 500, 1000, 3000 Siaair Micro Pad | 500, 1000, 1500, Siaair / Crown Factory Compound | 4000 Grit | 500, 2000 Siaair Micro Pad |
| Lane condition | Medium oil | — | — | — |
| Flare potential | — | — | Medium | — |
| Reaction | Length with continuous backend | — | — | — |
| Color | Black / Blue / Purple | Black / Gold / Orange | Smoke / Velvet / Ink | Black / Purple / Green / Lime |
| Release date | September 18, 2025 | October 22, 2026 | March 13, 2026 | February 19, 2026 |
| Status | Current | Current | Current | Current |
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