Spitfire
Spitfire Formula Four Lock Ins 101d
FORMULA 4Unbeatable 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 cut cut profile on one side and a straight edge "lock-in" cut on the other.