121146 Lightweight 12 Speed 11-46T CNC Mountain Bike Cassette Freewheel Compatible with HG Hubs - Lake Blue+Silver •【Lightweight CNC Machined Design】This mountain bike cassette freewheel is CNC machined from high-quality aluminum alloy and steel. The precision-cut design makes it exceptionally lightweight while maintaining strength •【Durability and Corrosion Resistance】Crafted from a combination of aluminum alloy and steel,this freewheel is built to withstand harsh weather conditions. The materials are corrosion-resistant and highly durable •【High Strength and Hardness】The materials and manufacturing process provide excellent strength and hardness,delivering outstanding performance during high-intensity rides •【12-Speed Compatibility】This cassette is compatible with 12-speed drivetrains,including popular models such as DEORE M6100,SLX M7100,XT M8100,XTR M9100,and Sram SX,NX,GX,and XX1 EAGLE. It also works with 24-speed systems,providing versatility for different setups •【CNC Hollow Design for Weight Savings】The CNC machining process ensures an ultra-lightweight design with a hollow structure,reducing weight without compromising strength Package included: •1 x Bike Cassette Freewheel