Zipp 858 NSW Rear Wheel - 700, 12 x 142mm, Center-Lock, HG11, Tubeless, Carbon, C1Zipps ultimate aero weapon is faster than ever, thanks to their proprietary Total System Efficiency technology. With TSE, the 858 NSW Carbon Tubeless Disc brake wheels features a tubeless and hookless rim profile for seamless tire interface and huge drop in weight. The wheels internal width is 23mm, ideal for running wider tires with lower pressures for decreased rolling resistance, and the Carbon Internal Reinforcement (CiR), creates a rim that is