[BM-3651] Quick installation and disassembly: The chain link of the quick release buckle is very simple to assemble and disassemble. You can even complete the chain link without the aid of other tools. High-quality materials: The chain lock connector is made of high-quality steel, forged many times, and the material is strictly controlled to ensure strength, and it can be reused and used for a long time. Smooth link: The chain buckle is manufactured according to the link aperture of the chain, with lubrication. After being assembled with the chain, it runs smoothly without jamming, ensuring the speed and comfort of riding. Accurate matching: professional equipment test spacing, professional technical test data, suitable for 1/6/7/8/9/10/11/12 speed bike, mountain bike chains. Customer Satisfaction: If you are not satisfied with the product, please feel free to contact us, we will provide you with a satisfactory answer within 24 hours. Color: silver Material: Steel Products include: 10 pairs of bike chain links Suitable for: 1/6/7/8/9/10/11/12 speed bike chain (optional) Installation method (please refer to the picture) 1: Determine the length and remove the outer chain block 2: Install two chain buckles at both ends 3: Justified 4: Align and tighten to both ends to complete