The shimano rs81 c35 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 35 mm deep 208 mm wide carbon rim with alloy braking surface for improved aerodynamics and increased rigidity for sprinters and tt specialists 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