Wh r9100 cl carbon clincher wheel designed to meet pro road race criteria lightweight clincher carbon 35 mm deep 224 mm wide rim with alloy braking surface for improved aerodynamics increased rigidity and excellent inertia for sprinters and tt specialists 21 stainless steel butted 20 18 20 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