Okeeyseda 15Pcs 27mm Piezo Discs with Leads Mic Drum Trigger Acoustic Pickup for Acoustic Guitar

[High quality] Made of copper, high temperature , stable, and long service life [Size] Piezo pickups have a diameter of 27 mm ,Simple and easy to use, These pre-wired Piezo pickups can be easily installed in guitars, foot pedals and other homemade instruments for sound and vibration detection [Widely used] Very suitable for beginners as devices, electronic drum triggers, buzzers, making your own microphone, also used in watches, cameras, mobile phones, electronic toys, computers, etc.