Item Type: Bicycle Chain Connector Buckle_x000D_ Weight: Approx.15g / 0.5oz_x000D_ Material: Steel 1Simple Disassembly and Convenient Maintenance: Simple disassembly, convenient maintenance, can be placed in the backpack. Easy to install, reduce the knot and chain break caused by improper chain pin driving. 2Recommendation: Road bike chain buckle replacemnet, with long service life, it is recommended to disassemble not more than 5 times. 3Manufacturing Material: Made of high quality steel material, strong and durable, which undoubtedly effectively extends its service life. 4Minuteness Processing: Fine processing, minuteness processing, rust proof and corrosion resistant. Simple operation, without too many tedious steps. 5Easy to Use: Easy to use and fine workmanship. Without any difficult requirements even though you use it for the first time.5 Pairs x Quick Release Buckle