Powerflex Skateboards Powerflex 5 Blue / Orange / Green / Yellow Skateboard Wheels - 63mm 88a (Set of 4) One (1) set of 63mm Powerflex Skateboards 5 Blue / Orange / Green / Yellow Longboard Skateboard Wheels - 88a; includes four (4) wheels Diameter: 63mm Durometer: 88a Color: Blue / Orange / Green / Yellow Does not include bearings.