Universal sustain pedal Universal sustain pedals are ideal for synthesizer users who want the most realistic pedal performance possible. Designed to act and feel like an acoustic piano sustain pedal, it features a specially designed rubber bottom that grips the floor and stays put as long as you play. Compatible with all synths with a 6.3mm jack connection for an external pedal. Full size universal sustain pedal Classic design Rubber foot plate for firm grip on the floor Polarity Switch - Works with all keyboards Chrome pedal