. 24 mm high profile aluminium rim for improved aero dynamics. . Easy to use Centre-Lock rotor mount for use with disc brakes. . 28 stainless steel bladed straight pull spokes with a 2-cross lacing pattern improve lateral and torsional (power transmission) rigidity. . Hub uses angular contact bearings designed to cradle the balls giving both radial and lateral support for superior strength and durability in real world riding conditions. . Labyrinth and contact sealing - low-friction seals effectively shut out water, mud and dirt without affecting rotational smoothness. . 9, 10 and 11-speed compatible. . Recommended tyre width 25-38C. . Supplied with Q/R skewer. . Disc only - does not work with rim brakes