Feature: 1. Our hubs are compatible with 8-11 speed cassettes and feature a six-claw base. 2. They also support front and rear disc brakes, making them ideal for riders who require superior stopping power. 3. Constructed from high grade aluminum alloy and crafted with CNC precision technology, these hubs are both lightweight and highly durable. 4. The high-density serrated teeth interlock tightly, ensuring a firm grip with just a slight stepping angle, thus minimizing force loss. 5. The packaging contains two quick-release levers, which are easy to install and quick to remove! Specification: Experience smoother rides and better performance with this bike hubs - perfect for high-performance mountain and road biking. Our hubs feature a CNC-machined axle for a lighter weight and stronger structure. Features: Our hubs are compatible with 8-11 speed cassettes and feature a six-claw base. They also support front and rear disc brakes, making them ideal for riders who require superior stopping power. Constructed from high grade aluminum alloy and crafted with CNC precision technology, these hubs are both lightweight and highly durable. The high-density serrated teeth interlock tightly, ensuring a firm grip with just a slight stepping angle, thus minimizing force loss. The packaging contains two quick-release levers, which are easy to install and quick to remove! Specifications: Material: Aluminum alloy Color: Black/ Red (optional) Spoke: 14G*32H O.L.D: Front 9/15x100mm 15x110mm/ Rear 10x135mm 12x142mm.12x148mm Weight: Front 155.4g / Rear 268.7g (Total: 424+(-)5g) Bearing: Front 2 / Rear 4 Pawls: 6 pawls Package list: 1 * pair of bike hubs 1 * pair of quick release levers Package List: 1 * pair of bike hubs 1 * pair of quick release levers