700c Zipp 30 Course Rim Brake Rear Tubular Wheel Built with the versatile and durable 77/177 hubset, includes endcaps, for QR and thru-axle options Durable, wide alloy rim (25mm external, 21mm internal) which offers enhanced aerodynamic efficiency as well as better comfort, tire profiles, and cornering grip Each wheel includes Zipp thru-axle end caps; 1 Zipp skewer; 1 Zipp rim tape, 1 Zipp tubeless valve and 1.85mm spacer for use with 10-speed cassettes (rear)