Photo and specs courtesy of Brunswick. Reproduced with credit to the maker.
How it moves
Arcing turn (symmetric 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.
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
PowrKoil 17™ Reactive
Reactive solid
Core
Two-Piece Shaped Dynamic
Factory finish
High Gloss
Color
Black Pearl / Pink Pearl
Released
Not listed
USBC
Approved
Weights and specs
Weight
RG
Differential
Int. diff
15 lb
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Surface
Coarse grit
Coarse and fine
Fine grit or polish
High Gloss. 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.
