Dura-Ace SW-7970 Di2 10s drop bar switch

Shimano SW-7970 Dura-Ace Di2 10-speed switch for drop bar (climbing shifter)

The most advanced level of shifting technology: at the touch of a switch Dura-Ace Di2 is quick shifting, smooth, and effortlessThe removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and also provides effortless gear shiftsSimply pressing tactile buttons allows effortless and comfortable shifting even when your hands are coldRight hand shift switch to be used in conjunction with ST-7970 levers which can be located on top of the handlebars giving a second shifting position, ideally suited for climbing