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.

Storm

Double Agent

Name: Storm Double Agent
Brand: Storm

Discontinued

Hook potential6 (est.)6 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: Reactor™ Pearl Reactive; Reactive pearl
Core: Not listed
Factory finish: Not listed
Color: Not listed
Released: Not listed
USBC: Approved 2006-08-01

Weights and specs

Weight	RG	Differential	Int. diff
15 lb	—	—	—

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.

Reviews on YouTube

Nick Pennine · 2010 · Walnut Hill Bowl and a Storm Double Agent

Haris Piknjac · 2009 · Haris Piknjac Bowling 222rpm w Storm Double Agent

Picked by search for this ball; videos and thumbnails belong to their creators and play on YouTube.