Features1Highquality steel can be stable and durable, and super torque can help you save energy. 2Used in combination with a wrench, it is suitable for mountain bike crankshafts and used to disassemble square and knurled crankshafts. 3It is easy to operate and very suitable for bicycle maintenance. 4Bicycle chain remover, hook lock ring tool and bottom bracket assembly tool all in one, multifunctional 3in1 bottom bracket wrench, cassette freewheel wrench and bottom bracket wrench (for the cover). 5Bicycle chain remover, can be repaired when the cassette flywheel is removed, used to remove and install the flywheel and shaft. 6Puller tool, extended ejector, used to remove chain links and cranks. Very suitable for square cone crank sets. 7The bottom bracket tool, 20 teeth, is used to remove the bottom bracket of the bicycle. The highstrength steel structure is very durable. 8The bicycle chain cutter has a compact and portable design, twotone grips, comfortable operation, dual drive pins, easy to chain, and specially designed to remove and install chain bolts. 9It can be used for all kinds of bicycles, including mountain bicycles, road bicycles, foldable bicycles, children's bicycles or ordinary daily bicycles, etc. 10Due to its light weight, the bicycle chain repair tool kit can be carried even when riding.SpecificationItem type:BicycleRepairToolMaterial:SteelColor: As picture shownWeight: Approx. 530gSuitable for: Suitable for mountain bikes, road bikes and other types of bicycles.Chain wrench size: Approx. 20cm/7.9inChain cutter size: Approx. 10.5x4.8cm/4.1x1.9inBottom Brackettool size: Approx. 5x3cm/2x1.2inPuller tool size: Approx. 7.8cm/3.1inPackage List1 x Chain wrench1 x Chain cutter1 xBottom Brackettool1 x Puller tool