Affordable Swiss performance With DT&';s ratchet system (36t), all of the teeth on each side of the ratchets engage simultaneously every time. This creates much smaller point loads and results in the legendary reliability of Ratchet System hubs 6-bolt disc Steel cartridge bearings Refined end caps allow for easier disassembly Specifications Skewer Included: No Hub Drilling: 32 Hub/Brake Compatibility: 6-Bolt Disc Color: Black Spoke Interface: J-Bend Bearing Type: Sealed Cartridge Defined Color: Black Rear Axle: 12mm Thru x 148mm