The Shimano Dual Control right levers features a revised lever position and bracket shape developed using data from a broad study of different hand shapes. Provides quick and intuitive shifting cyclists expect from Shimano 105. Blade shape creates shorter lever access curve allowing riders with a wide range of hand sizes and shapes to comfortably reach their levers Enhanced leverage delivers better braking and shifting control with less effort Mechanical 2x dual control left lever with updated ergonomics offers light shifting operation that lets cyclists focus on the road ahead Reach Adjust allows riders to customize their fit