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 control6 pawl, 6 phase115 tooth driveringEasily serviced with no proprietary tools. Designed to keep you in the saddle and out of the service queueClassic j-bend spoke interfaceSteel cartridge bearings are durableItem SpecificationsBearing TypeSealed CartridgeCassette Body TypeShimano Micro SplineCenter to Flange, Left38Center to Flange, Right25ColorOrangeDefined ColorOrangeFlange Diameter, Left58Flange Diameter, Right60Hub Drilling28Hub/Brake Compatibility6-Bolt DiscRear Axle12mm Thru x 148mmSkewer IncludedNoSpoke InterfaceJ-BendWeight299 Industry Nine Hydra Classic Rear Hub Rear Hub UPC: 810098981972