H.E.A. High Aerodynamic Efficiency. The fastest solution for time trials and triathlons. A wheel with maximum efficiency in the wind tunnel. Without turbulence produced by the sticks, the wind passes without obstacles. Extremely rigid construction with very good power transmission. Once it starts spinning it's hard to stop. TIRE: Wheel of 3 Sticks. Aerodynamic design with 28mm outer width. High Modulus Toray Monocoque Carbon. Matte UD Carbon finish with high-resistance decor transfer graphics. Profile: 70mm Outer width 28mm Inner width: 20mm Bushing: Integrated CNC Aluminum with high precision sealed bearings. Center Lock Disc Anchor Closure/Shaft: 12x100mm Colors: Black/Black WEIGHT: Cover: 925 gr Limitations: Recommended maximum cyclist weight: 110 kgs Recommended tire size: 25mm to 32mm