Universal Compatibility; Universal pigtail electrode pads fit most TENS (Transcutaneous Electrical Nerve Stimulation) units, EMS (Electrical Muscle Stimulation) massagers, and muscle stimulators. Pads are comfortable to the touch, featuring white non-woven backing with black carbon conductor and premium gel adhesive. Reusable TENS electrodes designed for multiple uses when applied and removed with care; provide excellent conductivity. Self-adhesive TENS unit electrodes with conductive, one-size-fits-all pin connector. Safe pads are latex-free and non-irritating to skin. 2.0 mm female connector fits 2.0 mm male connector. TENS electrodes are soft and comfortable for use. Made with soft non-woven backing, flexible and easily conforms to body contours. Ideal for use on back, shoulder, leg, arm, neck, calf, and other areas. Black carbon conductor ensures reliable conductivity without shocks during therapy sessions. Replacement electrode pads. TENS unit electrodes are proven to work effectively for electrotherapy. Pre-gelled with latex-free adhesive, these electrodes are gentle on skin and suitable for daily pain relief and treatment. Color: White Material: Non-woven Warm Tips: Before Application: 1. Clean and dry the application area. Apply only to unbroken skin. 2. Open and remove electrodes from packaging. Keep original packaging for storage. 3. Peel electrodes from release sheet by lifting the edge. Do not pull by the wires. 4. If pads appear dry or adhesion is weak, lightly moisten with water and wait a few minutes to rehydrate the gel. 5. Place electrodes on treatment area. Press firmly around edges and over entire surface to ensure good skin contact. Removal: 1. Gently peel off electrodes. 2. Clean with a non-alcohol wipe or rinse with cold water; allow to air dry. Keep sticky side facing up to avoid contamination. 3. Return sticky side to the clear backing sheet and store in original packaging. 4. Store in a cool, dry place away from direct sunlight and extreme temperatures. Storing in a refrigerator may extend lifespan. Package Includes: 40PCS Wired Electrode Pads Note: Light and display settings may cause slight color variation between image and actual product. Measurement may vary by +/- 1-3 cm.