The Industry Nine Hydra Rear Hub is a high-quality and durable component designed for bicycles. With 28 holes and a Shimano Micro Spline freehub/driver type, this hub provides excellent performance and compatibility with a wide range of wheels. Its 6-bolt disc brake design allows for reliable and efficient braking, while the sleek black color adds a stylish touch to your bike. This set includes one rear hub, making it a crucial part for any cycling enthusiast looking to upgrade their wheels with a reliable and top-notch component.