Piezo disc

15pcs Piezo Pickup 35mm Piezo Amplifiers Discs Piezo Disc Transducer Contact Microphone Trigger

12PCS 27mm Piezo Discs with Wire Brass Piezoelectric Disk Piezo Pickup Transducer for Acoustic

10pcs 27mm Piezo Piezos Elements Sounder Sensor Drum Disc DIY

15Pcs 20mm Piezo Discs Transducer Contact Microphone Trigger Sound Sensor with 9.8in Wires for

15PCS 35mm Piezo Discs with 25cm Wire Piezoelectric Pickup Patches for Acoustic Electric Guitar

10 Pcs 29mm Piezo Disc Electric Transducer for Acoustic Guitar Mandolin Ukulele DIY

10 Pcs 35Mm Piezo Sounder Sensor Trigger Drum Disc + Copper Wire