Lightweight racing hub with 6 pawl drive system.Smooth, quiet and reliable power transfer.The ultra-dependable drive system of this hub uses 6 reversed pawls, all independently sprung and featuring double tips, giving 12 engagement points on a 30 click Cr-Mo freehub driver. Forged and CNC machined body.Rigid 15mm alloy tube axle.4 cartridge bearings.Stable, extra wide spaced spoke flanges.Secure fitting, Cr-Mo knurled end cap inserts.Alloy 11Spd. FreehubsCampy or Shimano compatible.6 individually sprung, double tipped pawls.24H with offset 16/8 drilling or 32H 16/16 drilling.Black with Red axle caps.White with Red axle caps.Red with Red axle caps.Weight: 275g 6D - Halo 6 Drive System:The ultra-dependable 6-Drive system: Smooth, quiet and reliable power transfer.6 reversed pawls, all independently sprung and featuring double tips, giving 12 point simultaneous engagement on a 30 click Cr-Mo drive ring powering the optional Cr-Mo or 7075chard alloy splined freehub body.This results in an extremely positive and reliable drive system.The uncluttered freehub that a reversed pawl system provides, allows a cartridge bearing to be used directly under the freehub drive ring (rather than an offset position that is commonly used in conventional pawl systems that cram the pawl mechanism into the relatively small diameter of the freehub itself.) The resultant reduction in offset torque transfer from the freehub reduces leverage effect on the axle and ultimately increases bearing durability.Hub specs:Flange Diameter:Left: 40mmRight: 58mmCenter Left: 42mmCenter Right: 16mm