... , Color: Blue 3,Standard: ANSI, GB, ISO, DIN 60-1 Roller chain with double attachment's specification:1, Plate material: 40Mn; Pin ... : 40Cr; Bush and roller: 10# steel2, Color: Blue. And natural black, yellow are available ... , ISO, DIN5, Packing: a chain + a poly bag + individual box + wooden case6, Delivery time: 50 days 60-1 roller chain with 1 attachment