Features： 1、Our bike hubs are designed to provide a smooth and reliable ride, with 32 holes and quick release for easy installation. 2、Our hubs support 8/9/10/11 speed cassettes, and come with a al base and six claw base. 3、Featuring front and rear disc brake compatibility, our hubs are for riders who demand the best in stopping power. 4、Includes two quick-release levers for easy installation and removal. 5、Made with aerospace-grade al alloy material and CNC precision technology, this hubs is both lightweight and high-strength. Specification： Experience smoother rides and better performance with this bike hubs - for high-performance mountain and road biking. Our hubs feature a CNC-machined axle and 32 holes for a lighter weight and stronger structure. Features: Our bike hubs are designed to provide a smooth and reliable ride, with 32 holes and quick release for easy installation. Our hubs support 8/9/10/11 speed cassettes, and come with a al base and six claw base. Featuring front and rear disc brake compatibility, our hubs are for riders who demand the best in stopping power. Includes two quick-release levers for easy installation and removal.  Made with aerospace-grade al alloy material and CNC precision technology, this hubs is both lightweight and high-strength. Specifications: Material: Al alloy Color: Black/ Red/ Colorful (optional) Size: 10cm /  3.9in (front); 13.5cm / 5.3in (rear) Package size: 20*16*7cm / 7.9*6.3*2.8in Package weight: 655g / 23.1oz Package list: 1 * front bike hubs 1 * rear bike hubs 2 * quick release skewers Package List： 1 * front bike hubs 1 * rear bike hubs 2 * quick release skewers