SPITFIRE Formula Four Lock-Ins 101D 53MM (Set of 4)
FORMULA 4: Unbeatable lasting performance SPITFIRE urethane. Fast as hell. Long lasting, abrasion resistance, smooth anti-stick slide with a controllable grip. Guaranteed.
LOCK-IN (SHAPE): Asymmetrical shape and design featuring a conical profile opposite a straight edge side. Lock on in.
**(Stock photo shows 52mm, these are 53mm)