ICAN 56mm Carbon Clincher Tubeless Ready 700C Wheelset Sapim CX-Ray Spokes Novatec hub (AS511SB/FS522SB) 20/24 Holes Only 1684g ICAN 56mm rim is the most aerodynamic rim that does not suffer from loss of stability in crosswinds. Ideal for the all around rider that focuses more on long flat rides, but also rides in a fast groups and hill climbs Sapim CX-Ray aero spoke combines excellent aerodynamics with low weight and great strength Novatec hub (AS511SB/FS522SB) Shimano or Sram 10/11 speed cassette compatibility Weight:1684+-20g (750+-10g / 934+-10g) 2 year warranty for manufacturer defects, lifetime crash replacement program (discount for new wheels)