The Box Three Pro Disc Rear Hub-10mm-36H-Black is the budget friendly solution for riders looking to upgrade their rear disc hub, or looking to finally make the switch to disc brakes. Features a 6 bolt disc brake rotor mount. With an aluminum shell, 4-pawl, 120-points of engagement, and 10mm steel axle it falls right into the middle of the strength-weight-cost Venn diagram. FEATURES Forged Aluminum Hubshell 10mm Axle Chromoly Axle 3-Pawl 120 Points of Engagement Chromoly Driver Sealed Bearings Straight Flanges Laser Etched Graphics COMPATIBILITY Box One Cassette Spacer Kit Box One XL Pro Lite Carbon 1-1/8" Alloy Steerer 20” X 10mm Fork Box One XL Pro Lite Carbon 1-1/8" Alloy Steerer 20” X 10mm Fork Box One 24x1.75" 36-Hole Front Rim Black Box One 20x1.75" 36-Hole Front Rim Black SPECIFICATIONS AXLE: 10x110 HOLE DRILLING: 36 MATERIAL: Aluminum, Hardened Alloy Steel HARDWARE: Steel DRIVER TYPE: Shimano Compatible ENGAGEMENT SYTEM: 3-Pawl 120 Points of Engagement BRAKE TYPE: 6-Bolt Interface WEIGHT: 445g/15.7oz