The Shimano RS11 9/10/11 Speed Clincher Wheelset, offering all the technology of Shimano wheels at an economical price. With a 24 mm high profile aluminium rim for improved aero dynamics, 16 front and 20 rear stainless steel bladed straight pull spokes to make a strong yet compliant wheel. The 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. They also offer precision bearing adjustment and easy maintenance. Along with labyrinth and contact sealing which makes a low-friction seals effectively shut out water, mud and dirt without affecting rotational smoothness. The freewheel to compatible with 8, 9, 10 and 11 speed cassettes.