Designed for AccuRelief transcutaneous electrical nerve stimulators (TENS) and electrical muscle stimulators (EMS) bulk units. Contains (1) AccuRelief Universal Supply Kit. Includes: (4) sets of (2) 2"x2" electrode pads, (2) lead wires, and instructions. Each pad is reusable up to 30 times and is latex free. TENS technology works to stimulate the body's own pain relief system. The AccuRelief Universal Supply Kit for TENS & EMS Systems is designed to work with AccuRelief Single & Dual Channel TENS systems. Simply replace the original pads and/or lead wires with the ones in the supply kit, & you are ready for more TENS treatment. TENS systems work to stimulate the body's own pain relief system using electro-stimulation. The pads in our supply kit fit onto your TENS electrodes for targeted relief directly at the site of pain. Refer to instructions for electrode placement guide. AccuRelief Universal Supply Kit for TENS & EMS systems is compatible with AccuRelief Single & Dual Channel TENS systems, giving you control over your electrotherapy pain relief. Lightweight, flexible electrode design shapes to almost any part of the body. Carex Health Brands is a global leader in innovation, design & functionality. We build upon these standards by researching & testing new products, providing informative & functional retail packaging to improve the quality of everyday life for our customers