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Hammer Spawn

Photo and specs courtesy of Hammer. Reproduced with credit to the maker.

How it moves

Foul lineArrows · 15 ft43 ft · board 45.9° entry
Hockey-stick turn (asymmetric core). Dotted is skid, then the turn, then the roll into the pocket. Estimated from the coverstock, finish, core, and differential for a right-handed bowler with medium revs on a house shot. Lane conditions, speed, and layout move all of this.
Hammer

Spawn

Hook potential8 est.8 of 10, estimated

How much the ball wants to hook, 1 (straight, a spare ball) to 10 (the strongest oil-eaters). The maker publishes no number for this ball, so this is estimated from the coverstock, core, finish, and differential.

Coverstock
HK22C² Solid
Reactive solid
Core
Gauntlet
Asymmetric
Factory finish
500, 1000 Siaair Micro Pad
Color
Black
Released
2026-05-14
USBC
Approved 2026-05-05

Weights and specs

WeightRGDifferentialInt. diff
12 lb2.590.0410.014
13 lb2.600.0410.014
14 lb2.520.0500.012
15 lb2.500.0500.012
16 lb2.510.0440.011