Designed to quickly and accurately remove and install chain pins. Along with superior strength and durability, it features a handy "loosening shelf" to remedy stiff links after reassembly. The fine thread and comfortable size enable easy removal of even the toughest chain pins. Fits the following : Common bicycle chains of 8/9/10 speed, Works for all common bicycle chains. Durable Steel Construction This small but powerful and precise tool is specially designed to quickly and accurately remove and install chain pins. It is of the same quality as the one used by the specialized factory. Along with superior strength and durability, it features a handy "loosening shelf" to remedy stiff links after reassembly. The fine thread and comfortable size enable easy removal of even the toughest chain pins. Light weight, it's the perfect take-along chain tool. Fits the following : Common bicycle chains of 8/9/10 speed, Works for all common bicycle chains. Durable Steel Construction -With perfectly contoured cushioned rubber coated handles With a "shelf" for loosening tight links Package included: 1 x BICYCLE CHAIN TOOL BREAKER SPLITTER