Photo and specs courtesy of bowling.com. Reproduced with credit to the maker.
How it moves
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.
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
MicroTrax Solid
Reactive solid
Core
Defiant LRG
Asymmetric
Factory finish
2000 Abralon
Color
Citrine/Ruby/Amethyst
Released
2022-03-11
USBC
Approved 2022-01-04
Weights and specs
Weight
RG
Differential
Int. diff
12 lb
2.59
0.029
0.008
13 lb
2.57
0.032
0.010
14 lb
2.50
0.052
0.015
15 lb
2.47
0.053
0.016
16 lb
2.47
0.051
0.016
Surface
Coarse grit
Coarse and fine
Fine grit or polish
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.
Reviews on YouTube
Anthony Simonsen · 2026 · I Review The NEW Roto Grip Perfect Gem! (Vs. Original Gem)Darren Tang · 2023 · Roto Grip Magic Gem & TNT Infused - Bowling Ball Review!Creating the Difference · 2022 · LOWER REV RATE REVIEW | Roto Grip Gem Bowling Ball Review - TruBall Reviews
Picked by search for this ball; videos and thumbnails belong to their creators and play on YouTube.
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Same coverstock and core type; the closest company for this ball in a bag.
