Features1 Technology: Hub freewheel ratchet adopts manufacturing technology, and the surfaces are finely polished to ensure strength and improve fastening reliability. 2Chrome Molybdenum Steel: Cassette locking tool is made of chrome molybdenum steel with high strength, rust resistance and durability. 3Ideal Replacement: Cassette lockring tool is a DIY replacement part for bicycles, which can be used to replace old or broken parts. 4Easy to Use: Bike cassette lockring tool is easy to install and disassemble, saving time and labor, and easy to use. 5Compact Portable: Bike cassette lockring tool is light in weight, small in size, compact in structure and easy to carry.SpecificationItem Type: Bike Cassette Lockring ToolMaterial: Chrome Molybdenum SteelSpeed: 8,9,10 (Mountain Bike)Applicable:For Ball Hub or Bearing Hub with the Same Base Structure.Package List1 xBikeCassetteLockringTool1 xAccessory