Features： 1、High Rigidity: The shaft of the bike chain is reinforced, the concave surface is embedded in the high rigidity compact structure, and the tensile strength is high. 2、116 Link: The chain length of the 116 link of this 12 speed bike chain provides more reserves for the subsequent upgrade of the transmission system. With chain connector. 3、Double Bridge Type: The double bridge type chain can improve the tensile and torsional strength of the chain, the speed change is sensitive and stable, it will not get stuck, and it can withstand high pedal force. 4、High Performance: The waist is chamfered design, the chain is rustproof, anti corrosion, wear resistant and durable. The tooth tips engage with the chain piece quickly, which is stable and safe. 5、Electroplating Process: The surface of the chain is treated by electroplating process, which is not easy to rust, and the speed is stable. The inner and outer plates and pins are galvanized. Specification： Item Type: Bike Chain Material: Carbon Steel Shaft Length: Approx. 5.4mm/0.2in Applicable Models: Most Mountain Bikes, Road Bikes, Folding Bikes, Etc. Applicable Speed Models: 12, 36 Speed Models Package List： 1 x Bike Chain 2 x Chain Connector