Shimano Dura-Ace SW-R9150 Di2 Climbing Shift Switches Experience smooth and precise gear changes with the Shimano Dura-Ace SW-R9150 Di2 Climbing Shift Switches. Designed for cyclists who demand efficiency, these switches make shifting as easy as a mouse click. With the innovative Di2 technology, you can effortlessly select the right gear for both the front and rear derailleurs. Key Features Di2 technology ensures precise and easy shifting with a light touch. Electrical wires replace traditional cables, reducing issues from contaminants, corrosion, and stretching. Tactile buttons provide comfortable shifting, even in cold conditions. Climbing twin button satellite shift switch allows rear derailleur operation from the top of the bars. Direct plug-in to E-tube drop bar STI shifters. Comes with 261 mm E-tube electrical cables pre-installed. Lightweight design at just 30 grams. The Shimano Dura-Ace SW-R9150 Di2 Climbing Shift Switches are perfect for those who want reliable and effortless gear changes. Whether you're climbing or cruising, these switches ensure you stay in control.