Plug in the compact KSP20 Keyboard Sustain Pedal and use your foot to activate the sustain function on any electronic keyboard with a 1/4" sustain jack. Designed for ease of use and convenient set up, this pedal features a polarity switch to make it compatible with any brand of keyboard, an integrated 6' cable, a treaded top for foot traction, and nonslip rubber feet to keep it in place on the floor.