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
Not listed
Core
Symmetric with Scoop Technology
Factory finish
500 Siaair / Royal Compound
Color
Navy / Bronze Pearl
Released
Not listed
USBC
Approved 2015-06-01
Weights and specs
Weight specs have not been entered yet.
Surface
Coarse grit
Coarse and fine
Fine grit or polish
500 Siaair / Royal 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.
Reviews on YouTube
BowlerX.com · 2016 · Radical Primo Solid Bowling Ball Review - BowlerX.comLane Side Reviews · 2016 · Radical Primo Solid by Lane Side ReviewsCheapBowlingBalls.com · 2015 · Radical Primo Solid Bowling Ball Review
Picked by search for this ball; videos and thumbnails belong to their creators and play on YouTube.
