Neewer&reg; 5-Pack Piezo Contact Microphone Pickups for Guitar, Violin, Banjo, OUD, Ukulele, Mandolin, Cello and More, Pick up Clear and Accurate Sound 5-Pack Piezo Contact Microphone Pickups - 1/4" female jack with 10 inch cable Professional pickup elements help you capture clear and full sound Standard 1/4" female jack for amp, mixer, preamp or other recording equipment Includes magic tape for easy attachment Fit for guitar, mandolin, nanjo, violin, ukulele, viola, cello ,OUD etc