The Joyo JSP-10 Sustain Pedal is a very portable and light professional sustain pedal, and is stable for professional use. It has a polarity switch on the side. Four rubber pads on the bottom provide a skidproof base. A 1.5m connected cable is provided. JSP-10 Sustain Pedal for Keyboard, Electric Piano & MIDI Synthesiser. The Joyo JSP-10 Sustain Pedal is a very portable and light professional sustain pedal, and is stable for professional use. It has a polarity switch on the side. Four rubber pads on the bottom provide a skid-proof base. A 1.5m connected cable is provided. You can use this sustain pedal with any brand of keyboard, electric piano and midi controllers by simply using the polarity switch found on the side of the pedal. It is truly a universal pedal for amateurs and professionals alike.