C2050 a1 attachment connecting link. #40 roller chain with sa1 attachment link every 2nd pitch.
60np x 50ft nickel plated roller chain. Offset link 50np nickel plated (half link). #140 2c double strand cottered roller chain rc140 2c. Nitro roller chain breaker/cutter breaks ansi 60, 80. #80 roller chain with sk1 attachment link every 2nd pitch. Wh82 x 10ft welded steel chain. #35 roller chain with k1 attachment link every 2nd pitch x.