Oumers Universal Bike Chain Tool with Chain Hook, Road and Mountain Bicycle Chain Repair Tool, Bike Chain Splitter Cutter Breaker, Bicycle Remove and Install Chain Breaker Spliter Chain Tool Handy, Durable and Well Made --- Metal frame with grip coated by rubber for comfortable and anti-slip handling. Integrated chain hook holds links during assembly. Chain Pin Breaker Smart Design, 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 Compact design, portable Universal--Fits the following : Common bicycle chains of 7/8/9/10 speed, suitable for most of bicycles.