Miscellaneous Musical Instruments

20PCS 20mm Piezo Disc Transducer Contact Microphone Trigger Sound Sensor with Wires for Mic Drum Trigger Acoustic Pickup Guitar 20PCS 20mm Piezo Disc Transducer Contact Microphone Trigger Sound Sensor with Wires for Mic Drum Trigger Acoustic Pickup Guitar 20PCS 20mm Piezo Disc Transducer Contact Microphone Trigger Sound Sensor with Wires for Mic Drum Trigger Acoustic Pickup Guitar