GRAY 5.0/9.5 Tubular Wheelset High Modulus Carbon rim for tubular tires. 50mm / 95mm rim depth Basalt braking surface. Internal nipples for greater aerodynamics Stainless steel bladed spokes. Front: 20. Rear: 24. GRAY DT Hubs with Japanese fully sealed EZO bearings Included: spoke tool, brake pads, brake shoes, Ti skewers, valve core extenders. Worlds Best Warranty (see description for details).