Features11. Bicycle Chain Cutting Device; Weight: about 0.15kg; Materials: Carbon Steel; Fit for: 5-10 Speed Chain. 22. 3-in-1 Wrench for splined type bottom bracket. Material: Carbon steel, Plastic; Size: 20cm X 7cm(appr.), Length of Chain : 23.5cm(appr.) 3Multi-function: Repairing and assembling tool for bicycles 43. Bike Axis Bottom Bracket Remove Tool Size: Approx. 5cm x 3.1cm Splined Bottom Bracket Round Hole Internal Diameter: Approx. 2.3cm Square Hole: Approx. 1.3*1.3. 54. Black Bottom Bracket Remover Tool Used to Open Axial and Bottom Bracket Flywheel Disassemble and Install tool, with 12 teeth, can used to disassemble bike flywheel. 65. It fits for Shimano, for MF etc rotating freewheel. The Lockring tool needs to be worked with 24mm wrench.SpecificationMaterial: Carbon steelColor: BlackInternal Diameter: 20MM 12 teethHeight: Approx. 26.5mm5. Bike Crank Extractor Puller ToolSize: Approx. 7.7cm x 2cmHexagon Socket Sleeve Internal Diameter: Approx. 1.4cmBlack Nut Screw Thread Diameter: Approx. 2.1cmPackage List1 X Bike Chain Breaker1 X Crank1 X Silver Bottom Bracket1 X Black Bottom Bracket1 X Flywheel Chain Disassembly Wrench