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
"300" Reactive
Core
Spinner Symmetric
Factory finish
4000 grit Abralon
Color
Not listed
Released
Not listed
USBC
Approved 2007-06-01
Weights and specs
Weight
RG
Differential
Int. diff
14 lb
2.52
0.047
—
15 lb
2.47
0.045
—
16 lb
2.49
0.040
—
Surface
Coarse grit
Coarse and fine
Fine grit or polish
4000 grit Abralon. 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.
