Industry Nine Hydra Classic hubs are the heart of your wheelset, everything revolves around them, literally. Every Classic Hydra hub is made start to finish in Asheville, NC. From turning and milling bar stock 7075-T6 aluminum for shells, axles and encaps, wire EDM cutting A2 tool steel for pawls and driverings, to in-house anodization lab, every step of design, engineering, manufacturing and assembly is done to exacting standards. 690 P.O.E. Hydra Freehub body engages every .52 degrees yeilding telepathic control. 6 pawl, 6 phase. 115 tooth drivering. Easily serviced with no proprietary tools. Designed to keep you in the saddle and out of the service queue. Item Specifications: Color: Black, Defined Color: Black, Hub Drilling: 28, Spoke Interface: J-Bend, Hub/Brake Compatibility: 6-Bolt Disc, Cassette Body Type: XD 11/12 Speed, Rear Axle: 12mm Thru x 148mm, Weight: 360g, Center to Flange, Right: 49, Center to Flange, Left: 55, Flange Diameter, Left: 58, Flange Diameter, Right: 60, Bearing Type: Sealed Cartridge,