Specifications Hign-concerned Chemical:None Type:MTB Bike Hubs Size:135mm Number of Holes:32 holes Axle:qr Freehub:HG Position:REAR Braking System:Disc Brake Spoke Hole:29 - 36 Material:Aluminum alloy Category:Bearing Hub Hub Hole Number:32 holes 1,The X360 bicycle hub stands out with its high-volume sound performance, delivering a crisp and pleasing sound, setting the benchmark for sound density. 2,With the exceptional EZQ lubrication technology, this hub provides an effortless riding experience, making hill climbing more manageable and helping you conquer various terrains. 3,The X360 hub employs new technology, featuring 8 pawls, each with 3 teeth, ensuring tighter gear engagement for enhanced performance. 4,This bicycle hub offers a variety of vibrant color choices, allowing you to easily match your bike's overall appearance, making it a crucial upgrade for your bike wheelset. 5,The X360 hub supports multiple speed systems, including 8, 9, 10, 11, and 12 speeds, ensuring riding safety, durability, and excellent strength to meet various riding needs.