Hi,my dear customer, welcome to Jacenvly, our products are cheap and good quality, price is fair, you can't miss it. Please click on our store, we have many kinds of products, there will be you like and suits you. If you have any questions about your purchase, please feel free to contact me. We provide world-class customer service and try our best to safeguard your consumption rights, so that you can have no worries about your purchase. I wish you can buy the most cost-effective goods you like. 1Pair Portable Bicycle Chain Master Link Joint Connector Quick Clip New Description: new and Practical bicycle chain buckle of chain Buckle have all speed button No tools need to the chain for cleaning As a addition to your seat pack, it just may save the day when you have a broken chain on the or road. Suitable for mountain bike and road bike. Easy to install,practical and convenient to use Assembly Guide: 1.Fit chain with the correct length, clean bearing and lubricate. 2.Do not forget to lubricate the pin. 3.Insert both halves of into the chain ends. 4.Press both halves of connector together. 5.Lock in place by pulling the chain. 6.Opening: press both plates together while sliding the chain ends towards each other. Specification: Suitable for: 6/7/8/9/10 Speed Chains Material: Stainless Steel Color: A,B,C Quantity: 1 Pair (2Pcs,See pictures for details) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1Pair Portable Bicycle Chain Master Link Joint Connector Quick Clip New Description: new and Practical bicycle chain buckle of chain Buckle have all speed button No tools need to the chain for cleaning As a addition to your seat pack, it just may save the day when you have a broken chain on the or road.