Features: Crafted from high strength aluminum alloy with a 1 piece design, these bike hubs deliver great impacts resistance and structural integrity. Featuring precisions bearings for smooth rotation, these light weight hubs optimize power transfer and simplify installation for 100mm/135mm axles. Ideal for riders seeking quality components that withstand repetitive shocks during dirt jump, pumps track, and technical mountain descents. Engineered to conquers loose soil berms, singletracks, and skatepark obstacles while maintaining consistent momentums through tight corners and drops. The optimized weight to strength ratio makes these bike hubs perfect for competitive cyclists prioritizing responsive handling without compromising on the trail durability. Specifications: Materials: Aluminum Alloy Color Optional: 3 Color are Available as Shown in the Picture. Package Weight: approx.910g Size: Mixed Size Package Includes: 1 Set of Bicycles Hubs note: Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!