Detailed Product Description industrial chains1.Specifications:1) simplex: 35-1,40-1,50-1,60-1,80-1,100-1,120-1,140-1,160-1,200-12) duplex:35-2,40-2,50-2,60-2,80-2,100-2,120-2,140-2,160-2,200-22, Color available:blue black yellow natural 3. Good quality: our products are all conformed to ISO,ANSI,GB,BS,DIN and JIS standards.4, material: alloy steel, We all use the good material