ICAN Cyclocross Bike 40mm Tubular Disc Brake Wheelset Carbon Fiber 28 Holes Shimano or Sram XD 10/11 Speed 40MM DEEP CARBON RIM. ALL AROUND PERFORMANCE, ALL AROUND SPEED-the ICAN 40mm rim is the ultimate all around road, cyclocross, and climbing rim. Unbeatable lightweight climbing ability and very good stability in crosswinds make the ICAN 40 ideal for the all around rider that focuses on hill climbs, and group rides in a variety of wind conditions FULL CARBON TUBULAR. HIGH STRENGTH CARBON FOR LIGHTWEIGHT PERFORMANCE-using the latest carbon forming technology, we are able to build a very strong rim from carbon only. A critical area for durability, the braking surface of the tubular rim is up 73% stronger than other carbon tubular rims. This give you a wheel that is very light with positive braking performance and reliable durability EXTRA WIDE 25MM RIM INCREASED AERODYNAMICS AND IMPROVED HANDLING-the rim's 25mm width improves aerodynamics by creating a more uniform airflow over the wheel, balancing the aerodynamic forces of the rim with the leading edge of the tire Weight:1530+-40g(700+-20g / 830+-20g ) Guarantee: 2 years