展开Those electrode pads connect to universal TENS units, EMS, pulse massagers and muscle stimulators that are equipped with 2mm pin connectors for charge delivery. Each pad is pre-gelled and placed on a flexible white cloth backing which makes it easy to apply and conform to different body part even around joints such as the knees, elbows and shoulders. - Reusable: Use highly adhesive gel, which is reusable and makes it easy to use and available anywhere. - Universal Compatibility: Compatible with most TENS/EMS models which equipped with 2mm pin connectors. It can make your unit working like a new. - Safe & Comfortable: These pads are not irritating. It is easy to peel off, which can ensure a safe and comfortable experience for your skin. - Premium Quality: Made of non-woven fabrics and self-adhesive, which has a long lifespan to use. - Perfect Gift: A good gift for electric muscle stimulation, pain relief, muscle shock therapy and other pain treatment.