YQBOOM 10PCS 35mm Piezo Disc Transducer Contact Microphone Trigger Sound Sensor with 3.94 Inches Wires for Acoustic Instrument，Mic Drum Trigger Acoustic Pickup CBG Guitar

YQBOOM 10PCS 35mm Piezo Disc Transducer Contact Microphone Trigger Sound Sensor with 3.94 Inches Wires for Acoustic Instrument，Mic Drum Trigger Acoustic Pickup CBG Guitar

BQLZR Piezo Trigger Cone for Electronic Drum Percussion Parts 1.38x1.46inch Pack of 5

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