YQBOOM 10PcS 41mm Piezo Disc Transducer contact Microphone Trigger Sound Sensor with 394 Inches Wires for Acoustic Instrument,Mi

This item are brass piezoelectric discs which are essential parts for pickups of acoustic instruments All the discs are made from selected copper, ensuring excellent conductivity and long-lasting use It can be easily installed and suitable for many kinds of instrument like acoustic guitars, drums great for acoustic instrument pickups, stomp boxes, contact mics, etcDrive Type: Piezo DiscsResonant frequency(kHz): 3050- 05 KHzResonant impedance (ohms): 300 maxDiameter: 41mm 161 inchesThickness: 03mm 001 inchescable Length: 100mm 394 inchesMaterial: Brass