The Profile Design 3One Carbon Brake Lever is built specifically for those rare moments when you actually want to slow down on your TT bike. With a sleek construction that minimizes drag, and a single finger design, it's an exercise in functional minimalism, without compromise. The 3One gets its Carbon designation from the carbon fiber brake levers. They're sculpted to provide perfect single finger braking. The mount is an injection molded composite affair, with an expander wedge to hold itself in place. It's designed to route the brake lever inside your aero bar, which further reduces drag to help you maximize your speed and efficiency. The Profile Design 3One Carbon Brake Lever is available in one size and in the color Black.