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. Excellent conductivity. Self-adhesive TENS unit electrodes with conductive, one-size-fits-all pin connector. Safe TENS machine pads; latex-free and non-irritating to skin. 2.0 mm female connector fits 2.0 mm male connector. TENS electrodes are soft and comfortable to use. Made of soft non-woven backing, flexible and easily conforming 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. Electrode replacement pads compatible with most TENS units. Proven to work effectively for electrotherapy. Pre-gelled with latex-free adhesive, these TENS unit pads are gentle on skin and safe for daily pain relief treatments. 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 do not adhere well, apply a few drops of water to moisten the gel. Wait a few minutes to rehydrate. 5. Place electrodes on treatment area. Press firmly along edges and across entire surface to ensure good skin contact. Removal: 1. Gently peel off electrodes. 2. Wipe with a non-alcohol wipe or rinse with cold water. Allow to air dry completely. Keep sticky side facing up to avoid contamination. 3. Return sticky side to clear liner and place back into original packaging. 4. Store in a cool, dry place away from direct sunlight and extreme temperatures. Refrigeration may extend lifespan. Package Contents: 40PCS Wired Electrode Pads Note: Light reflection and display settings may cause slight color variations between image and actual product. Measurement may vary by +/- 1-3 cm.