Alesis, Accordion Accessory (ASP2)Premium Response for Expressive Performances - Universal sustain pedal with chrome foot pedal for a natural, realistic pedal actionUniversal Compatibility - Classic design with a conveniently located polarity switch for compatibility with all electronic keyboardsBuilt To Last - Premium build with a robust, heavy-duty mechanism for uncompromised reliabilityUltra Portable - Lightweight, ultra-compact aesthetic provides classic piano style sustain in portable footprintPlayer-Centric - Specially designed rubber pads located on the pedals underside grips the floor and stays put while you play