With a square edge and a traditional rounded edge, Spitfire Formula Four 99D Lock-ins Skateboard Wheels are designed to keep you glued to rails, coping, and ledges longer than ever.
The Formula Four Conical Full skateboard wheels feature Spitfire's performance urethane that lasts longer and withstands more abuse than the competition.
Slimeballs Vomit Mini wheels on wide asymmetrical shape with a rounded edge on one side and a conical edge on the other giving you a choice of lock in feel, with a wide riding surface for control on all terrain.