ADDITIONAL SEAL: keeps the bearings /balls zone clean and smooth running, maintaining performance over timeDYNAMIC BALANCE™: Every point of the rim is counter-balanced by an equal weight on the opposite side. Maximum stability of the wheel even at high speeds.35 MM PROFILE FOR A STANDARD TYRE: translates into good penetration while being extremely easy to handle even in a cross wind.STAINLESS STEEL AERO SPOKES: Maximum aerodynamic penetration - lower weight and greater reactivity.SPOKES ANTI-ROTATION SYSTEM: Keeps the spokes in the position of maximum aerodynamic penetration.EXCLUSIVE MEGA-G3TM SPOKE PATTERN: perfect balance of the spoke tensions on both sides of the wheel. Reduces stress, increases transversal rigidity and the transmission of power to the wheel. G3TM eliminates vibrations even with "heavy" cyclists.ALUMINIUM HUB: high side stiffness yet with low weight.OVERSIZE FLANGE MEGA G3™ CASSETTE SIDE: increases torsional stiffness, greater reactivity with each change in the cyclist's paceALUMINIUM PIN: reduces wheel weightALUMINIUM NIPPLES: reduce the peripheral weight of the wheel.NEW, COMPLETELY REDESIGNED AND LIGHTER AERODYNAMIC-PROFILE WHEEL BLOCK: Steel spine and eccentric, lever with drill lightening and aluminum die. Eccentric-closure system allows cyclist to modulate the pressure necessary for heightened sensitivity to find the proper closure for the block. Easy to use, with a material resistant to wear and tear, rust, and pressure.