Wheel Diameter = 60mm / Wheel Width = 38mm Wheel Shape = Nano Cubic Wheel Formula = 97A Dragon Formula Outer Lip: Adds width & stability, makes Coconut Wheelies possible, climbs over coping and up onto curbs and up walls, and protects your axle nuts! Inner Lip: Leaves more truck exposed, grabs onto obstacles, and lock into grinds Dragon Formula Nano Cubic Wheels, 60mm, 97a Durometer, Street, Smooth