WH-R9100 TU carbon tubular wheel, designed to meet pro road race criteria Lightweight tubular full carbon 60 mm deep 28 mm wide rim for improved aerodynamics, increased rigidity and excellent inertia for sprinters and TT specialists 21 stainless steel butted (2.0-1.8-2.0) and bladed straight pull spokes for optimal balance and rigidity (OPTBAL) Elbow-less spokes make for a strong yet compliant wheel High lateral rigidity is produced with a wide flange spacing Labyrinth double-contact sealing effectively shuts out water and dirt Alloy cone with integrated steel Borozon treated bearing races - super mirror finish reduces friction Quick and easy to maintain digital click bearing adjustment Freehub uses quick pawl engagement every 10 degrees Cold forged, machined aluminium hub shell and oversized 7075 alloy axle combined with a titanium Freehub body keep the wheel weight to a minimum 700C tubular compatible Supplied with Q/R skewer 8, 9, 10 and 11-speed compatible rear wheel Average weight 652 grams