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Hammer Obsession Tour Pearl

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

How it moves

Foul lineArrows · 15 ft48 ft · board 5.58.5° 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 Pearl

Discontinued
Hook potential7 (est.)7 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 Pearl
Reactive pearl
Core
Obsession Tour
Asymmetric
Factory finish
500, 1000, 1500 Siaair / Crown Factory Compound
Color
Gold
Released
2021-09-17
USBC
Approved

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, 1500 Siaair / Crown Factory Compound. Skims the oil and saves its energy for the dry part of the lane: longer skid, later and sharper hook. Polished and pearl balls. 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.