Duplex roller chains for ANSI 80-2 1) material:40Mn 2) plate thickness:3.25mm 3) color:natural, ... black,blue,yellow ANSI 80-2 Aseries duplex roller chains(16B-2R)1)material : ... 3.25mm4)color : nature,black,blue,yellow5)factory price6)standard:ISO/ DIN /ANSI7)good quality with best delivery time8) ... attachments:A-1,A-2.K-1,K-2,SA-1,SA-2,SK-A,SK-2 etc4)double pitch transmissions ...