The shimano rs81 c24 tubeless compatible 10 11 speed 700c rear road wheel is a high performance road racing wheel meets the demands of todays professional and amateur riders the 24 mm wide carbon rim with alloy braking surface means this wheel is both light weight and rigid whilst maintaining high braking performance with standard brake pads the cold forged and machined hub has polished bearing races to reduce friction and provide for smooth rotation while the labyrinth double contact sealin