Wheel Factory hand built wheels Velocity Quill rims are stiffer and wider than the successful A23 rim utilizing technology from the Aileron Made in the USA DT Swiss 350 hubs with DT's 36t ratchet system Machined aluminum hub shell with labyrinth seals and sealed cartridge bearings Aluminum freehub with DT Swiss patented starratchet mechanism Built with DT Swiss Competition double butted spoles (2.0/1.8/2.0mm) and brass DT Swiss Squorx nipples Hand laced and trued in the USA