The specs of every Hammer ball: 27 current and 140 retired, with their core, coverstock, RG and differential per weight. Pick up to 4 balls to compare them.
Keep your arsenal in BowlingMaat: weight, layout, surface and maintenance of every ball in one place. Free, and no games to log.
Hammer makes 27 bowling balls today. Our catalog also holds the specs of 140 Hammer balls that are no longer made.
The newest Hammer ball is the Black Widow Spare+, released on September 17, 2026.
Of the current Hammer balls, these are made for heavy oil: Reckoning, Zero Mercy Hybrid, Zero Mercy Tour, Fallout, Spawn, Full Effect, Black Widow 3.0 Dynasty and Zero Mercy Solid.
Hammer is a brand of Brunswick Bowling Products.