An excellent value in a basic do-it-all chain tool. This 2-piece cast CrMo chain tool features a hollow removable handle which can be slipped over a small Allen wrench to give 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 chain.Tools2 total.Chain Tool Cast CrMo Steel.Chain HookStainless Steel Wire.Tool MaterialHardened Steel.Added FeaturesChain Pin Breaker,Chain Pin Compartment.Size (L x W x H)8.3 x 4.3 x 1.5 cm,3.3” x 1.7” x 0.6”.Weight82 g / 2.89 oz.* The chain tool is compatible with all single and multi-speed pin type chains, except Campagnolo® 11 speed hollow pin chains.