What Our Gearhead(R) Experts Are Saying:"The 6. 7 PRO is a course-specific wheel for flat and rolling terrain where aerodynamics compounds over distance. Put it on the right course and the depth pays off in a way you can feel."Why We Like ItThe G SES 6. 7 PRO uses the deepest rim profile in ENVE's gravel line, with front and rear rims shaped independently for the aerodynamic demands of each position. The internal width smooths the transition at the tire sidewall, where the aerodynamic return is largest at gravel racing speeds. Wide Hookless Bead construction, borrowed from ENVE's mountain wheel program, dissipates impact energy at the bead to keep the wheel serviceable on the rough terrain. The Innerdrive PRO hub runs ceramic bearings and an ultralight alloy ratchet kit.