The Shimano SW-RS801 Dura-Ace Di2 12-Speed Sprint Switch Shifter, featuring a 100mm cable, is crafted for smooth integration with Shimano Dura-Ace Di2 12-speed systems. These shifters enable quick gear changes, ideal for sprinting and fast-paced cycling. The 100mm cable length provides flexible installation options to fit your bike setup, enhancing your shifting performance.