Product Name: Mountain Bike Free Hub Cassette Repair Part, 6 claws.Sturdy Material: Sturdy aluminum alloy construction for strength, lightweight, and sturdy, sturdy.Features: Sealed bearings provide high waterproof performance, low resistance force for smooth rotating.Application: The hub body is the part that installs the flywheel and connects the hub, It needs to be disassembled for maintenance or replaced after long time use.Good Accessories: For bike free hub repair parts replacement free hub cassette body. Specification: Material: Aluminum AlloySize: 4.5cmx4.5cmx5.1cm or 1.77inchx1.77inchx2.01inch6 Claws Package Includes: 1 Bike Free Hub Note: Please allow slightly errors due to manual measurement and different monitors.