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Hammer Obsession Tour

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

Obsession Tour

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
TourV2 Solid
Reactive solid
Core
Obsession Tour
Asymmetric
Factory finish
500, 1000 Siaair Micro Pad
Color
Burgundy
Released
2021-02-18
USBC
Approved 2021-01-19

Weights and specs

WeightRGDifferentialInt. diff
12 lb2.590.0410.014
13 lb2.600.0410.014
14 lb2.480.0340.013
15 lb2.470.0340.013
16 lb2.480.0290.011

Surface

oil · laneCoarse grit
oil · laneCoarse and fine
oil · laneFine grit or polish
500, 1000 Siaair Micro Pad. Bites through heavy oil, so the ball reads the lane early and hooks sooner. Sanded balls (500 to 1000 grit) live here. Surface changes over games, and a pro shop can take any ball either way with a pad.

Balls like this

Same coverstock and core type; the closest company for this ball in a bag.