... steel 2. color : blue, black, yellow and natural A series roller chainsSpecification:1. Simplex: 03C, 04C-1, 06C-1, 085 ... -1, 08A-1, 10A-1, 12A-1, 16A-1, 20A-1, 24A-1, 28A-1, 32A-1, 36A ... -2, 085-2, 08A-2, 10A-2, 12A-2, 16A-2, 20A-2, 24A-2, 28A-2, 32A-2, 36A ... -3, 06C-3, 08A-3, 10A-3, 12A-3, 16A-3, 20A-3, 24A-3, 28A-3, 32A-3, ... blue, black, yellow and natural industrial transmission chain (A series)