... 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 : 40mn2)pitch : 25.4mm3)plate thickness : 3.25mm4)color ... roller chain attachments:A-1,A-2.K-1,K-2,SA-1,SA-2,SK-A,SK-2 etc4)double pitch transmissions v ...