Description: 【Construction】: This Mountain Bike Disc Brake Hub is made with high density, 32 hole design and CNC integrated processing for wear resistance. It's sturdy, impact resistant, and lightweight to ensure strength without deformation or rusting. 【Features】: This bike disc brake hub features a quick release design with 120 decibels of sound, making it ideal for street cycling enthusiasts. It also has a three tooth 5 claw design that enhances the overall performance of your bike. 【Easy Maintenance】: With built in sealed bearings X5, this hub reduces the probability of incorrect assembly, making maintenance a . 【Material】: Made from premium quality aluminum alloy, this hub offers enhanced wear resistance to prolong its lifespan. Its anodizing process not only adds aesthetic but also provides better protection to the metal surface. 【Precision Cutting】: The high precision cutting technology ensures a more stable disc installation with a standard six bolt disc brake and 44mm hole distance. This mountain bike disc brake hub guarantees stable quality and high performance for your biking adventures. Size Chart: Rear Hub: 13.5cm/5.31inch Package Includes: 1 Rear Hub 1 Quick Release  Note: Please allow slightly errors 1-2cm differences due to manual measurement.