Hammer 3-D Offset Attack, released in 2022, pairs the HK22 - Neoflip 25 pearl cover with an asymmetric High Rev Offset core. It measures RG 2.49 and differential .053 — low RG (revs up early) and high flare potential, banded on Storm's published scale. It leaves the factory at 500, 1000, 1500 Siaair / Crown Factory Compound.
Measured at 15 lb. These are box specs for an undrilled ball — drilling changes them.
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Brand vocabulary, not measurements — no two manufacturers use the same scale, so these never compare across brands.
| Weight | RG | Diff | Int. |
|---|---|---|---|
| 12 lb | 2.61 | 0.043 | 0.011 |
| 13 lb | 2.59 | 0.043 | 0.011 |
| 14 lb | 2.50 | 0.053 | 0.008 |
| 15 lb | 2.49 | 0.053 | 0.008 |
| 16 lb | 2.50 | 0.046 | 0.007 |
These specs are factory reference for the model, compiled from manufacturer publications and other sources and provided as is. They may contain errors or describe a different production run, and they say nothing about the condition of any individual used ball — surface prep, resurfacing, plugging, and drilling all change how a ball behaves relative to its published numbers. Spotted something wrong? Tell us at support@rerackbowling.com.
The Ball Finder matches your rev rate, speed, and lane condition against these specs. Buy and sell used on ReRack — your payment is held until the ball is delivered.
Closest on the three specs that compare across brands — RG, differential and symmetry. One ball per line, so no other version of the 3-D Offset Attack appears here.