On-Stage KSP100 Keyboard Sustain Pedal | Universal Piano-Style Sustain Pedal with Polarity Switchlug in our full size, piano style KSP100 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 an integrated 6' cable, removable nonslip grip for foot traction, and nonslip rubber feet to keep it in place on the floor. Full size piano style pedal provides authentic feel and smooth action Polarity switch reverses