Cheerock Pack of 20 Piezo Disc, 20mm Piezo Discs Transducer with 3.94inch Leads, Acoustic Contact Microphone Piezo Pickup, Piezo Elements for Drum Triggers Microphone Trigger Element CBG Guitar

Cheerock Pack of 20 Piezo Disc, 20mm Piezo Discs Transducer with 3.94inch Leads, Acoustic Contact Microphone Piezo Pickup, Piezo Elements for Drum Triggers Microphone Trigger Element CBG Guitar

uxcell 10 Pcs Piezo Discs 10mm Acoustic Pickup Transducer Element Trigger Buzzer CBG Guitar

TIMESETL 15pcs Piezo Pickup 27mm Piezo Amplifiers Discs with 13" Leads for Acoustic Guitar Drum