missing link pliers made of high quality steel, heavy duty and durable. Ergonomic handle for comfortable use and to help apply the correct force, will last the test of time! Bike Chain Link: The smooth edge would not damage the bike chain,easy to use without tool,suitable for bike chains of 6/7/8/9/10 speed. Bike Chain Wear Indicator Tool: Allow you to quickly assess the wear and stretch of chains, help you decide to change a new one or not. Bike chain link pliers: For quick removal of joining links, advanced tool for both open and close, chain master link remover and connector. Bike Chain Breaker Splitter Tool: Very smart,Easy to break,easy to re-chain,unique groove on the top make it easy to see how far you have pop the peg out and to remove the cutted chain with peg out of the tool.