The guitar piezo pickup disc 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:Golden -Material:Brass -Size:37.00X2.70X0.10cm/14.54X1.06X0.04in -Note: center disc measures approx 27mm/1.06in diameter, 0.4mm/0.02in thick, cord length 330mm/12.99in -Type:External drive type element -Resonant Frequency:4.6 ± 0.5 KHz -Resonant Impedance:300 max - Improve audio effect: The piezo pickups discs are designed to enhance the overall tone of your guitar or other audio devices, providing an enjoyable audio experience. - Compact and lightweight: Piezo discs do not add any significant weight or bulk to your instrument, ensuring that it remains comfortable to play. - Pre- pickups: These trigger buzzers are pre- , which means that you do not need to spend much time making wiring or connections. - Enhanced durability: Made of brass materials, these piezo amplifiers discs are resistant to wear and tear, will keep working during a longer time. - Versatile and practical: The piezoelectric discs are widely applicable as electronic drum triggers, buzzers, contact microphone pickups and more. Package list: 15 x piezo pickups discs