Spitfire Formula Four 99D Lock-Ins Swirl Cobalt Blue/Natural Skateboard Wheels Size:52mm tear-proof backing that trims cleanly

tear-proof backing that trims cleanly every time

stronger and more durable

Reinforced crotch (extra stitching) to reduce blow-outs

Sleeve Prints

100% polyester

Spitfire Formula Four 99D Lock-Ins Swirl Cobalt Blue/Natural Skateboard Wheels Size:52mm tear-proof backing that trims cleanlySpitfire Formula Four 99DuroLock Ins Skateboard Wheels An asymmetrical shape giving you the outside edge of a conical wheel but flat inside cut to lick in on grinds. ASYMMETRICAL SHAPE CONICAL OUTSIDE FLAT INSIDE FOR LOCKING IN GRINDS MORE SPEED AND CONTROL ON ALL SURFACES UNMATCHED FLATSPOT RESISTANCE SMOOTH ANTI STICK SLIDE HIGH REBOUND COMPOUND 100% TRUE PERFORMANCE URETHANE