Duroc wheels feature a lightweight, double-walled rim designed to support aggressive riding with high-volume and true plus-sized tires. SRX hubs are easily serviceable and offer 90 points of engagement. FEATURES : Includes everything you need to get riding, both Shimano 11 and SRAM XD style freehub drivers, tubeless tape pre-installed, valve, and sealant SRX hubs use sealed cartridge bearings SPECS: Hub/Brake Compatibility: 6-Bolt Disc Color: Black Wheel Size: 27.5" Cassette Body Type: Shimano Micro Spline , SRAM XD 11/12 Speed ISO Diameter: 584 / 650b / 27.5" Designed for ebike: Yes Valve: Presta Rim Width (Internal): 32 Defined Color: Black Tire Type: Tubeless Ready Rear Axle: 12mm Thru x 148mm