Elite WAY TOO FAST Urethane! Flying out the lab to the streets and beyond, Elite Urethane guarantees more speed, a longer lasting roll, and hands down epic times with your crew. Hardline shapes feature a wide road surface for stability and consistent slide with a hard edge and conical cut for controlled tricks on coping and edges. All OJ skateboard wheels are sold as sets of 4. Brand OJ Wheel Diameter (Millimeters) 53 Wheel Durometer/Hardness 99a Road Surface (Millimeters) 23 Wheel Shape Hardline Wheel Width (Millimeters) 34 SKU 22222534