Photo and specs courtesy of bowling.com. 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
S30 Pearl
Reactive pearl
Core
Nightfall Symmetric
Factory finish
Not listed
Color
Purple Pearl
Released
2018-07-01
USBC
Approved 2018-06-05
Weights and specs
Weight
RG
Differential
Int. diff
15 lb
2.56
0.030
—
Surface
Coarse grit
Coarse and fine
Fine grit or polish
Coarse surfaces grip through oil and hook early; fine or polished surfaces skid longer and hook later. 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.
