... durable composite. It features two slip-resistant footboards sitting inside the two 9-inch, polyurethane, hubless wheels that are connected by a ... and maintain momentum on flat ground. Skatecycle , Rock Skate board,Skate cycle , New skate board,two wheel cycle Measures 32 x 6.5 x 8 ... crossbars?Currently there is only one size. Skatecycle , Rock Skate board,Skate cycle , New skate board,two wheel cycle