The SES 4.5 AR Disc is an uncompromising aero wheel designed specifically for disc brake equipped bikes and large volume 28 to 30mm TUBELESS road tires ENVE 4.5 SES AR Rear Carbon Rim - Clincher DISC 24h Made for cyclists looking for more speed, comfort, and traction on all road surfaces Optimised for 28mm tyres (tubeless tyres only) 24 hole 25mm internal rim width 55mm rim depth Tubeless compatible Weight - 461g Use only ENVE brass spoke nipples