Features1Built-in high-strength shaft and high-rigidity reinforced structure, it is compact, flexible and not jammed, so that the chain can withstand greater pedaling force and withstand high pedaling force. 2The chain length of 126 links provides more reserves for subsequent upgrades to the transmission system. 3External chamfering technology can prevent the teeth from interfering with the chain, and the chain runs smoothly between the gears, and the chain shifting operation is smoother. 4Provided with quick split chain link, it can be installed safely and quickly without tools. 5The whole adopts quenching heat treatment to improve the wear resistance, and the surface anti-rust treatment makes the chain lasting shiny. 6Fully compatible, it is compatible with 12/24/36speed transmission systems and all 12speed bicycles, and compatible with almost all 12speed gearbox systems, such as for Sram / Campagnolo / VG sport.SpecificationItem Type: 12 Speed Bike ChainMaterial: High Strength Carbon SteelLength: Approx. 160cm / 63.0in Product Weight: Approx. 325g / 11.5ozSpecification: 1/2 x 11/128 inchSpeed: 12 Speed Number of Links: 126 LinksUltimate Tensile Load: 1800 (KN)Application: Mountain Bike and Road BikeCompatible: For Sram / Campagnolo / VG sports, etc.Package List1 x 12 SpeedBikeChain2 x Quick Split Chain Link