... ,Oxid 3.Material:stainless,carbon steel 4.Certificate:Iso hex wrench 1)Features:1.Material: Low Carbon Steel, Alloy Steel, stainless ... steel, aluminum, etc2.Size:M2-M20 or as request3.Thread: M, UNC, UNF, BSW4.Finish:Black,Zinc Plated ,HOT GALVANIZED,Cr ...