... .Stainless steel 304, 316 2.mirror polish 3.Stainlless Steel Rail End (End-In),railing end 4.stainless steel rod end ... steel 304, 3162. Surface: mirror polish, high polished3.Stainlless Steel Rail End (End-In),railing end,stainless steel rod end bearing4 ... ,metallograph.Quality control: According to ISO 9001 2001 Stainlless Steel Rail End (End-In),railing end