VCYCLE 700C Carbon Racing Road Bike Wheelset 38mm Tubular UD Matte Shimano or Sram 8/9/10/11 Speed Vcycle basalt braking surface has the advantage of high temperature resistance for it can reduce the carbon road bike wheels probability of burning side.It also has good braking power,improving the braking effect. Novatec road hub which is made in Taiwan is durable,light and it can use 3-5 years under normal usage. 23mm is suitable for elementary training and competition. It makes our wheelset has lighter weight, better stability and road sense.Also,it improves aerodynamics by creating a more uniform airflow over the wheel. Skewers is lighter than steel skewers and it has high intensity, long service life.Brake pads are custom-made according to the carbon road bike rim and protect the brake side at the greatest extent.Four complimentary aero bladed spokes and nipples can replace the damaged ones. Weight: 1410g+/-30g/set; 24 months warranty for manufacturer defects