Professional Sustain Pedal from Proline | Proline PSS2
Amazon.com: Sustain Pedal for Keyboard - Sovvid Piano Foot Pedal with Polarity Switch for All Brands Electronic Keyboards, MIDI Keyboards, Digital Pianos, Yamaha, Casio, Roland, Korg, Behringer, Moog and More : Musical
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Damper Sustain Pedal Foot Switch for Yamaha Casio Electronic Piano Keyboard - Walmart.com