Item: Chain coupling The chain coupling, composed of two-strand chains and two sprockets, features simple and compact structure, and high flexibility, power transmission capability and durability. What's more, the chain coupling allows simple connection/disconnection, and the use of the housing enhances safety and durability. Material: Carbon steel,Brass,Stainless steel,etc Tolerance: 0.01mm-0.02mm Type number: 3012, 4012, 4014, 4016, 5014, 5016, 5018,6018, 6020, 6022, 8018, 8020, 10020, 12022 Model: KC Service: OEM,ODM,OBM Specification: Push Pin/Quick Release/Collar/Double Push Pin/Bolt
