Gate ValveChina Roller Chains Short Pitch Precision (B series) Duplex 05b-2 *06b-2 08b-2 10b-2 12b-2 16b-2 20b-2 24b-2 28b-2 32b-2 40b-2 48b-2 56b-2 64b-2 72b-2 Roller Chains, Find details about China Roller Chain, Lube-Free Chains from Roller Chains Short Pitch Precision (B series) Duplex 05b-2 *06b-2 08b-2 10b-2 12b-2 16b-2 20b-2 24b-2 28b-2 32b-2 40b-2 48b-2 56b-2 64b-2 72b-2 Roller Chains