Item Type:BikeChainMaterial: Alloy SteelWeight: Approx. 300g / 10.6oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Outer Chamfer Design: The bike chain is designed with external chamfer to avoid the interference of teeth with the chain shift, and the operation is smoother. 2Embedded High Strength Shaft Center: The bike chain has a highly rigid reinforced structure, which is compact, flexible and can withstand high trampling force. 3Hollow Structure: The hollow structure of the inner and outer chain pieces with precise design can reduce the overall weight without changing the strength. 4Rigid Forging Process: The high rigidity forging process can withstand the high strength instant explosive force, greatly enhancing the service life. 5Scope of Application: The bicycle chain is applicable to all kinds of 12 speed, 2 x 12 speed and 3 x 12 speed drive system.