1.ribbonfil for chain(410,428,428h) 2.material: 20Mn,20#,20CrMo,20CrMnMo 3.thickness ... #, 20Mn,20#,20CrMo,20CrMnMo ribbonfil for motorcycle chain,bicycle chain(410,428,428H) . The thickness and width of ribbonfil and other ... update quotation accordingly. chain ribbonfil for motorcycle chain,bicycle chain(410,428,428H)