Feature: 1. Built-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. 2. The chain length of 126 links provides more reserves for subsequent upgrades to the transmission system. 3. External 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. 4. Provided with quick split chain link, it can be installed safely and quickly without tools. 5. The whole adopts quenching heat treatment to improve the wear resistance, and the surface anti-rust treatment makes the chain lasting shiny. 6. Fully compatible, it is compatible with 12/24/36‑speed transmission systems and all 12‑speed bicycles, and compatible with almost all 12‑speed gearbox systems, such as for Sram / Campagnolo / VG sport. Specification: Item Type: 12 Speed Bike Chain Material: High Strength Carbon Steel Length: Approx. 160cm / 63.0in Product Weight: Approx. 325g / 11.5oz Specification: 1/2 x 11/128 inch Speed: 12 Speed Number of Links: 126 Links Ultimate Tensile Load: 1800 (KN) Application: Mountain Bike and Road Bike Compatible: For Sram / Campagnolo / VG sports, etc. . Package List: 1 x 12 Speed Bike Chain 2 x Quick Split Chain Link