Casio SP-34 3-Pedal Unit for PXS1000/3000 and CDP-S350 – Easy Music Center
Amazon.com: ENJOYPRO Sustain Pedal for Yamaha Keyboard, Piano Keyboard Pedal with Polarity Switch for Casio, MIDI, Roland Electronic Keyboards and Digital Pianos, 1/4 Inch Jack : Musical Instruments
Casio SP-3 Keyboard Piano Sustain Foot Pedal SP3 - Tested in Excellent Condition | eBay