Rims: WTB CZR i23 Carbon 700C* ETRTO 622-23* Inner width: 23mm* Torayca T700 UD carbon fiber for stiffness and compliance* Asymetric and angled spoke hole drilling* Externally reinforced spoke bed* Drilled for Presta valve* TCS 2.0 Tubeless System compatible* 28 holesFront hub: Shimano HB-RS770 Ultegra series* 12x100mm E-THRU (Axle not included)* Center Lock (6-Bolt adapter included)* Polished angular contact bearings* Contact sealed hubRear hub: Shimano FH-RS770 Ultegra series* 12x142mm E-THRU (Axle not included)* Center Lock (6-Bolt adapter included)* Polished angular contact bearings* Contact sealed hub and freehub body* Compatible with 11/12 speed Road (10 speed compatibility requires 1.85mm spacer, not included)Sold in Pair, including:* Tubeless Valve (x2)Assembled in North America by experienced wheelbuilders with Sapim Race Butted Stainless Steel spokes (Black) and 14mm Brass Polyax Ni