... We are a prefessional manufacture in China dealing with precision metal machining parts .precision CNC machining ... , competitive price , faet delivery time ,good service.6).Material stainless steel ,cold work steel ,Spring steel , martensitic steel,aluminum ,brass, bronze,copper, ... parts ;……Specifications of machining parts:(1) Material :Stainless Steel;Al;Alloy(2).High Tolerance :0.01mm(3). ...