Finish Line's E-Shift Groupset Cleaner is specially formulated to keep your sensitive and expensive electronic drivetrain clean and safe. It quickly and safely removes grit, grime and moisture from electric shifting drivetrain components, including the front and rear derailleur, derailleur pulleys, chain, cassette and even the crankset. E-Shift is safe and will not harm the wires or electronics. Plus, it dries in minutes leaving the drivetrain parts clean, and with no rinsing required.