Pinlocity
All balls
DV8 Grudge Pearl

Photo and specs courtesy of DV8. Reproduced with credit to the maker.

How it moves

Foul lineArrows · 15 ft46 ft · board 5.56.8° 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.
DV8

Grudge 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
Composite Hook Pearl
Reactive pearl
Core
Grudge Low RG Asymmetric
Factory finish
500 Siaair / Crown Factory Compound
Color
Black / White / Violet
Released
Not listed
USBC
Approved 2016-10-11

Weights and specs

Weight specs have not been entered yet.

Surface

oil · laneCoarse grit
oil · laneCoarse and fine
oil · laneFine grit or polish
500 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.