Spitfire Formula Four Lock-In Fulls 99DU Skateboard Wheels 55mm deck_7.88" Spitfire Formula Four Urethane was

Spitfire Formula Four Urethane was developed to combine all the desired properties of a performance wheel without sacrificing any one attribute at the expense of another

Soft brushed inside

breathable upper

The worlds smoothest skateboard bearings

A premium rubber-backed suede upper with butted seams offers extra durability and reduces friction

Spitfire Formula Four Lock-In Fulls 99DU Skateboard Wheels 55mm deck_7.88" Spitfire Formula Four Urethane wasNatural 99 duro urethane. Lock In Full shape. A wider version of the Lock In shape. Asymmetrically designed with conical cut outside for less weight. Straight edge "Lock In" inside for control on all terrains. Diameter: 55mm. Width: 39. 2mm. Riding surface: 26. 8mm. Set of four.