Feature:1. SUITABLE FOR BIKE TYPE: Bike cassette body tool is not easy to corrode and rust, high strength, support 11 speed bikes.2. FINE POLISHED: Bike cassette body is made of fine manufacturing process, the surface is fine polished and sanded, high strength and improve the reliability of fastening.3. ALUMINUM ALLOY MATERIAL: Our bike cassette freehub body tool is made of aluminum alloy material, strong and durable.4. SMALL SIZE: Bike cassette body is light weight, small size, easy to carry, it is a DIY replacement part for your bike.5. SAVE TIME AND EFFORT: The small size of bike cassette body is easy for you to install and remove, save your time and effort.Specification:Item Type: Bike Cassette Body ToolMaterial: Aluminum AlloyStructure: 2 BearingApplication: Support for 11 speed bikes(8-10 speeds need to add 1.85mm washer).Package List:1 x Cassette Body1 x Washer