Features： 1、High quality carbon steel can be stable and durable, super torsion can help you save energy, combined with a wrench, suitable for mountain bike crankshaft, for the removal of square and Knurled crankshaft. 2、Easy to operate, very suitable for bicycle maintenance. Due to its light weight, it is possible to carry a bike chain repair kit even when riding. 3、Bike Crank Extractor Puller, extended ejector, for removing chain rings and cranks, for square conical crank sets, and for removing tools with a wrench and crank unloader. 4、Bottom Bracket Remover, 20 teeth, for disassembly of bicycle bottom bracket, very durable high strength steel structure. 5、The removal tool for the bicycle cassette is designed to be used in conjunction with the cassette locking ring to remove the cassette from the hub. The flywheel remover can also be used to tighten the flywheel. Suitable for 8, 9 and 10 speed. 6、Our bike chain tools are available for all kinds of bikes, including mountain bikes, road bikes, foldable bikes, children's bikes or regular everyday bikes, etc. Specification： Item Type: Bicycle Repair Tool Material: Carbon Steel Color: As Pictures Shown Weight: Approx. 590g/20.8oz Suitable For: Mountain Bikes, Road Bikes and Other Types of Bikes. Hex Wrench Size: Approx. 15.6cm/6.1in Chain Remover Chainsaw Size: Approx. 29.5cm/11.6in Bottom Bracket Remover Size: Approx. 5x3cm/2x1.2in Bike Crank Extractor Puller Size: Approx.7.8cm/3.1in Rotary Flywheel Remover Size: Approx. 2.6x2.3cm/1x0.9in Package List： 1 x Hex Wrench  1 x Chain Remover Chainsaw 1 x Bottom Bracket Remover 1 x Bike Crank Extractor Puller 1 x Rotary Flywheel Remover