Photo and specs courtesy of Ebonite. 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
GB 10.7 Pearl
Reactive pearl
Core
Puma
Symmetric
Factory finish
500, 1000, 1500 Siaair / Crown Factory Polish
Color
Copper / Black
Released
Not listed
USBC
Approved 1998-04-01
Weights and specs
Weight
RG
Differential
Int. diff
10 lb
2.80
0.002
—
11 lb
2.77
0.002
—
12 lb
2.60
0.040
—
13 lb
2.57
0.040
—
14 lb
2.54
0.036
—
15 lb
2.52
0.036
—
16 lb
2.51
0.036
—
Surface
Coarse grit
Coarse and fine
Fine grit or polish
500, 1000, 1500 Siaair / Crown Factory Polish. 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.
