Jowsst 15-Piece 27 mm Piezo Discs with Leads Mic Drum Trigger Acoustic Pickup for Acoustic Guitar

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