Roller chains,triplex roller chain, link chain, connect link Roller chains , triplex roller chainlink chainDIN ISO Chain ... .2499.1107.063.8560.0599.025.00Roller chainSpecifications:1) A series chains:a) Simplex: 25-1 ~ 240-1b) Duplex: ... 6 ~ 240-6g) Octuple: 40-8 ~ 240-82) B series chains:a) Simplex: 04B-1 ~ 48B-1b) Duplex: 04B- ... yellow, blue, black4) Materials: carbon steel, stainless steel connect link