Tens unit pads with pigtail connector fits most TENS units; EMS massagers and IF devices, such as YK15AB, TENS 7000, AUVON, iReliev, Balego TENS 2nd Edition, iStim EV-820, Easy@Home EHE009, Trumedic PL-009, Santamedical, PurePulse, Famidoc, Belmint, MessuPro, Med-Fit, Intelect 07-7717 TENS Units and moreMedical electrodes are flexible and super comfortable to touch, white non-woven backing and premium gel adhesive, Latex-free and non-irritating to your skinPremium carbon electrodes provides superior high conductivity, effective to relief muscle sore and painDesigned for multiple uses when applied and removed with care20PCS tens unit electrode pads are packed in the resealable plastic bag, convenient to use