Made with copper and PVC materials,this 12mm piezo buzzer is.Its small size and lightweight design makes it and integrate into various electronic project Fit for and beginners,this 12mm piezo buzzer enhances your ; Add sound effects to your projects or use it as a pressure for installations. sound with the 12mm copper piezo buzzer,delivering a wide ranges of tones and clear music response. Suitable for voice and music applications.Perfect for enthusiasts and electronics hobbyists.