Sustain Pedal f. E-Piano & Keyboards, with "polarity" switch - Chrome plated pedal - Sturdy and durable, high strength plastic housing - 5ft (1.5m) cable with " (6.3mm) phone plug - 2 position "polarity" switch: Normally open (NO = "+ polarity") or closed (NC = "- polarity"), for maximum compatibility with almost all electronic keyboards and pianos - Works and feels like the sustain pedal on acoustic pianos