... years experience in special fastener 1,Name:SS 304 door handle;door handle;zinc alloy handle 2,For the similar ... 8,9.8,10.9,12.9,etcCarbon steelGr.B,Gr.C,Gr.D,Gr.36,Gr.58, ... electrophoretic coating,etc Polishing Grinding and polishing,etc,except mirror finish (3),Ability for the tolerance Roundess0.002mmCylindricity0.003mmRoughnessRa0 ... fastener ,especially the cutting/turning parts. SS 304 door handle