Compare bowling balls
Core numbers are compared in one weight. Some brands only publish them for one weight.
Brunswick Mesmerize
|
Hammer Black Widow 3.0 Dynasty
|
Hammer Black Widow 3.0
|
Roto Grip Perfect Gem
|
|
|---|---|---|---|---|
| Brand | Brunswick | Hammer | Hammer | Roto Grip |
| Line | Pro | Upper Mid | Upper Mid | HP4 |
| Coverstock | HK22C - EVO Solid | HK22 - Cohesion Solid | HK22 - Aggression Solid | ER1 Solid |
| Cover type | Solid reactive | Solid reactive | Solid reactive | Solid reactive |
| Core | Tri-Elliptic | Gas Mask | Gas Mask | Gem AI |
| Core type | Asymmetric | Asymmetric | Asymmetric | Asymmetric |
| RG | 2.510 | 2.500 | 2.500 | 2.490 (16 lb) |
| Diff | 0.056 | 0.058 | 0.058 | 0.055 (16 lb) |
| Int. diff | 0.017 | 0.016 | 0.016 | 0.017 |
| Factory finish | 500, 1500 Siaair Micro Pad | 500, 1000, 2000 Siaair Micro Pad | 500, 1000, 2000 Siaair Micro Pad | 2000 Grit |
| Lane condition | — | Medium oil – Heavy oil | Medium oil – Heavy oil | — |
| Flare potential | — | — | — | High |
| Reaction | — | Aggressive mid-lane and backend | Aggressive backend | — |
| Color | Red / Blue / Black / Sky | Ultraviolet / Black | Black / Orange | Pink / Rose / Onyx |
| Release date | August 15, 2024 | January 15, 2026 | January 25, 2024 | October 2, 2026 |
| Status | Retired | Current | Current | Current |
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