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Track Paradox

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

How it moves

Foul lineArrows · 15 ft44 ft · board 6.56.2° entry
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.
Track

Paradox

Discontinued
Hook potential7.5 (est.)7.5 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
QR-9 Hybrid
Reactive hybrid
Core
I-Core 2.0 (Dual Density)
Symmetric
Factory finish
500, 2000 Abralon®
Color
Blue / Blue Pearl / Light Blue
Released
Not listed
USBC
Approved 2015-06-01

Weights and specs

WeightRGDifferentialInt. diff
12 lb2.600.039—
13 lb2.530.055—
14 lb2.520.055—
15 lb2.480.057—
16 lb2.490.049—

Surface

oil · laneCoarse grit
oil · laneCoarse and fine
oil · laneFine grit or polish
500, 2000 Abralon®. Sanded then smoothed (1500 to 3000 grit): enough tooth for oil, enough gloss to get down the lane. Most box finishes. 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.