FEATURES:New graphics and Zipp visual identity embodying speed.Graphics printed directly on the rim using Zipp´s ImPress™ technology.18mm internal width and tubeless compatibility optimize the use of wide tires with low tire pressure.Cognition DB hub with highly efficient rolling, both during pedaling and freewheeling.Its Axial Clutch™ technology allows the ratchet mechanism of the freehub body to reduce friction by half compared to a traditional hub with three pawls.Sawtooth™ rim with Hyperfoil™ undulations and small HexFin™ ABLC dimples (golf ball-like) for improved aerodynamic efficiency and enhanced stability in crosswinds.Rim height ranging from 77 to 82mm.858 NSW.TUBELESS FOR DISC BRAKES/RIM BRAKES.WH-858-NTLD-A1.WH-858-NTLR-A1.Center lock disc interface.Wheels come with the locking ring (for the disc brake version).Wheel is delivered with 12mm end caps for the front and rear (for the disc brake version).Wheel is delivered with end caps and quick releases (for the disc brake version).XDR™ or SRAM/Shimano cassette body.Campagnolo cassette body sold separately.