Piezo Plate Piezoelectric element. 27mm is a perfect size for installing cigar box guitars, foot stompers, and other homemade instruments. They can also be used for custom pickup arrangements in more traditional stringed and percussion instruments. An electric pick-up is a surefire way to take your cigar box guitar or another build to the NEXT LEVEL, and many builders report that their instruments are much more attractive to potential buyers if they include a pickup. Package Includes: 1 x 27mm Piezo Plate
