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As well as being great value the Topeak universal chain tool is great quality and does exactly what it says on the tin. Constructed from cast CrMo steel it features a hollow removable handle which can be slipped over a small allen wrench to provide extra leverage. The universal chain tool includes a chain hook to make chain repair easier, is compatible with all single speed and most multi-speed chains, including 10 speed hollow pin chains. (Not compatible with 11 speed chains).