Spitfire Formula Four Lock-Ins

Grind confidently with the Spitfire Formula Four Lock-Ins Skateboard Wheels.

The Spitfire Lock-In shape features a familiar conical cut profile with a straight edge on the other side in order to lock into grinds for reduced slipping.

Poured with Formula Four Urethane in a medium profile with a smooth surface. Sold as a set of four in multiple sizes and durometers.