... with the machine assemble..3161 stainless 1,Products DetailesMaterial1.Stainless Steel:SS201, SS303, SS304, SS316, SS410, SS4202,Steel:C45(K1045), C46(K1046),C203 ... Anodize,Chromate, Polish,Electro Painting,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G. ) etc.Heat TreatmentTempering,Hardening, ... customer and help solve problem after sales.2,Factory Show 304 stainless steel flat washer