Ergonomic Design for Enhanced Comfort: Crafted with forged 6061-T6 aluminum construction for durability and featuring Venturi-style armrests, these aerobars provide multiple hand positions to reduce fatigue and boost aerodynamics during long rides. Adjustable: Achieve your perfect riding position with width-adjustable and rotationally adjustable armrests. The versatile design ensures a snug and secure fit, adapting to any road bike setup. Perfect for Triathlon and Long Rides: Whether you're competing in a triathlon, tackling a time trial, or on a long-distance road cycling, Legacy II Aerobars maximize aerodynamics and minimize drag, helping you ride faster and longer with less effort. Lightweight: Weighing just 450g, these aerobars are engineered with lightweight construction and robust durability, making them perfect for riders seeking high-performance gear for their road or triathlon bikes. Compatibility: Designed to fit 31.8 mm handlebars and adaptable to 26.0 mm bars with shim kits (sold separately). Please note, not intended for use with Aerobar Bracket Riser kits.