This is a NOS 10" rear spoke wheel with brake and 54 tooth sprocket, takes a 41 chain. It has never been used and the chrome is excellent. It uses up to a 400 X 10 tire. The outside diameter is 11" and the rim width is 2.5", axle diameter is 7/16". These wheels were used on many minibikes like Lil' Indian, Arctic Cat, and others. Would also be great for custom bikes and chopper.