Description: Easy installation: bicycle chain quick coupler, easy to disassemble, easy to clean, reusable Strong tensile force: special forged steel, electroplating and coloring, 50# steel is selected to ensure the strength Smooth and lubricated: surface polishing and internal oiling to reduce dead links and broken chains caused by improper driving of chain pins Simple disassembly and assembly, convenient maintenance. Due to the life limit, it is recommended to disassemble and assemble no more than 5 times (it is best to buy a few more spare pairs) Durable MTB Bike Parts, a Must-Have Tool for Outdoor Cycling Enthusiasts Specification: Material: Carbon steel Size(LxW×H): Approx. 175x90x5mm/6.89x3.54x0.20inch Package Includes: 6 Pair Bicycle Chain Connectors(2 Pack) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!