Brand New in the Package! LotFancy TENS Unit Electrode Pads, 40PCS 2"x2" TENS Unit Pads for EMS Muscle Stimulator Electrotherapy, Self-Adhesive TENS Pads Replacement, Reusable and Latex-Free FEATURES: Huge 40-Piece Set: 40PCS 2?x2? tens unit electrode pads in a box, every 4 pieces tens pads are packed in a resealable plastic bag for durability and convenient storage Universal Compatibility: Standard 2mm pin connector of electrode pads fits most TENS (Transcutaneous electrical nerve stimulation) units; EMS (Emergency Medical Services) massagers and muscle stimulators Safe and Comfortable: Our tens unit replacement pads are comfortable to touch; white non-woven backing with black carbon conductor and premium adhesive gel. Latex-free and non-irritating to your skin Excellent Conductivity: Premium carbon tens machine pads provide superior high conductivity, effective relief to muscle sore, tired muscles, muscle stiffness and chronic pain on the knee, calf, thigh, elbow, arm, neck, shoulder, wrist, hand, lower and upper back and much more Reusable and Durable: These tens unit muscle stimulator pads are designed for multiple uses if applied and removed with care. NOTE: Clean and dry the application areas before using. Remember you should only apply electrodes to unbroken skin. GREAT ITEM AT A GREAT PRICE!!