Beauneo Guitar Pickup Acoustic Electric Piezo Microphone Contact for Violin Ukulele Mandolin Banjo Cello

Drill a hole from the inside of the walking cover, insert the end pin union nut, insert it into the hole and tighten the nut You can attach the piezo in or to your build, drill a hole and mount the jack Very easy to install and sound well through several different extensions, no rolling required, no battery required Pre-wired piezo microphone saves time for you, is easy to install and convenient to use With the advantage of eliminating stagnant external noise and being not affected by sound reflections from objects nearby