Manufacture various wheel assemblies for motorcycles. Features and specifications: 1) Dimensions: 16", 17", 18", 19'', 21'' in 1. 4, 1. 6, 1. 85 2) Brake System: drum or disc 3) Material: Aluminum alloy 4) Light weight 5) Good hardness 6) Excellent elasticity 7) No mark of welding seam 8) An ideal choice of various motorcycles