Sustain Pedal for Casio CTK-491 CTK-496 CTK-571 CTK-573 CTK-591 CTK-593 CTK-671 CTK-691 CTK-691 CTK-700 Keyboard Footswitch Compatible with almost all electronic keyboards and digital pianos on the market Adjustment: positive and negative polarity switch Color: Silver tone + Black; Model: ATB-005 5 feet cable with 1/4 inch plug Chrome plated metal pedal, high strength plastic shell, sturdy and durable