ZTTO 12 Speed 9-50T Ultra Light CNC Hollow Mountain Bike Cassette Freewheel for XD Hub - Red+Silver •【Ultra-Lightweight CNC Machined Design】This XD cassette freewheel is crafted using precision CNC machining,resulting in an ultra-lightweight design without sacrificing durability •【12-Speed Compatibility】Designed to work seamlessly with 12-speed drivetrains,this cassette offers a 9-50T gear range,allowing for smooth shifting and versatility on various terrains •【High-Quality Material Construction】Made from a robust combination of aluminum alloy and steel,this freewheel is engineered for strength,longevity,and superior performance •【Exceptional Performance】This freewheel is built to perform in demanding conditions,providing smooth and reliable shifts throughout your ride •【Wide Compatibility with XD Hubs】This freewheel is compatible with all XD hubs,offering a perfect fit for riders who use XD drivetrains and want to upgrade their setup with a lightweight,high-performance option Specifications: •Type: 12-speed 9-50T •Material: Aluminum alloy + steel •Weight: 295g Package included: •1 x Bike Cassette Freewheel