ICAN 38mm 700C Carbon Clincher Cycling Racing Rear Wheel Shimano 10/11 Speeds 24 Holes 100% carbon fiber T700 with high-temperature carbon basalt braking surface road bike 700c rim Recommended For:Road Bikes, Racing Bikes. ICAN standard road bike 6 pawls hub R13-Shimano Sarm 10/11 speeds Campagnolo 10/11 speed(available) 2 year warranty for manufacturer defects, lifetime crash replacement program (discount for new wheels)