Rims: Mavic Open Pro Disc UST 700C (Black)* ETRTO 662-19* External width: 24mm* Inner width: 19mm* Mavic's own proprietary Maxtal aluminum alloy* SUP Tech smooth welded rim joint* Black eyelets* For Presta valve* Made in France* Weight: 430g* 28 holesFront hub: Shimano HB-RS770 Ultegra series* 12x100mm E-THRU (Axle not included)* Center Lock* Polished angular contact bearings* Contact sealed hubRear hub: Shimano FH-RS770 Ultegra series* 12x142mm E-THRU (Axle not included)* Center Lock* Polished angular contact bearings* Contact sealed hub and freehub body* Compatible with 11 speed Road (10 speed compatibility requires 1.85mm spacer, not included)* Assembled in North America by experienced wheelbuilders with Sapim Race spokes (Black) and 14mm Brass Polyax Nipples (Black)