1.Material: Aluminum alloy 2.Finish: oxidation 3.Process:CNC+ oxidation 4.Tolerance:+/-0.01mm As a motorcycle manufacturer in China, we have more than 6 years experience dealing in Dirt bike and Parts, Motorcycle Parts and Accessories, Protective Gears, Kayak, E-bike, ATV etc. Product Name: Dirt Bike Clamps CNC PartXJ Brand XJ, Your trustful choice, Welcome you to place orders.