Skatecycle , SKATE BOARD ,SKATE CYCLE , WHEEL BOARD 1)Aluminum body 2)hard wearing wheel Receiving a bronze in the 2010 International Design Excellence ... slip-resistant footboards sitting inside the two 9-inch, polyurethane, hubless wheels that are connected by a double-jointed, twisting axle ... there is only one size. Skatecycle , SKATE BOARD ,SKATE CYCLE , WHEEL BOARD