B series roller chains 1.material:40MN/A3 2.pitch:6. ... 6-17.0mm 4.color:natural.black.blue.yellow B series roller chains 1.material:40MN/A32.pitch:12.700mm3. ... can packing as your requirement,can print your own logo Main products as the following: 1.Motorcycle Chains: 25H (04CH), 415, ... Motorcycle chains: 428SO,520SO,525SO,530SO3. Roller chains: A series and B series4. Silent chains: SC3,SC4,SC5,SC6,SC8 ...