Shimano STEPS SW-E7000-L Left Hand Assist Switch with E-Tube Wire - The Shimano STEPS SW-E7000 Switch operates with Shimano STEPS E7000 drive units.Designed for controlling power assist modes on Shimano STEPS eBike drive systemsFeatures two large and definitive buttons for increasing or decreasing assistanceThe small third button changes the STEPS cycle computer display or switches the system between automatic and manual shift modesIncludes specific E-Tube Cable Length