... 3) color:natural,black,blue,yellow ANSI 80-2 Aseries duplex roller chains(16B-2R)1)material : ... thickness : 3.25mm4)color : nature,black,blue,yellow5)factory price6)standard:ISO/ DIN /ANSI7)good quality with best ... attachments:A-1,A-2.K-1,K-2,SA-1,SA-2,SK-A,SK-2 etc4)double pitch transmissions ... chain:ZGS38 series, 212A(2060) with attachment series,6)simplex,double,triplex chainsThe chain technic is as ...