The guitar piezo pickup is a versatile accessory designed for guitarists. It is made of brass material, ensuring pure sound quality. The long cable length makes it convenient to connect to guitars and other audio devices. It is easy to install and suitable for various types of instrument. Features -Color:Assorted Color -Material:Brass -Size:26.60X2.00X0.20cm/10.45X0.79X0.08in -Type:External drive type element -Resonant Frequency:5.6+/-0.5 kHz -Resonant Impedance:300 max -Static : 50000PF +/- 30% - Enhanced sound: These piezo pickups can enhance the sound of your acoustic guitar or other stringed instruments, providing a warm and loud tone. - Easy to install: The piezo discs are all already , easy to install and require no modification to your instrument. - Lasting use: These piezo disc elements are made of durable brass, which ensures that they will can withstand the rigors of regular use. - Wide application: The piezoelectric transducers are suitable for a wide range of musical applications. They can be used with acoustic guitars, drums, contact mics, etc. - Large quantity: These piezo pickups are available in large quantities, making them a for musicians of all levels to practice and perform. Package list: 15 x piezo pickups