1.Excellent Self-Adhensive: The low impedance solid electrode gel is made by an industry-leading adhesive, which provides excellent self-adhesive performance for a maximum of 35 uses. Our medical-grade reusable pads are bio-compatible,latex-free, and non-irritating to ensure a safe, comfortable experience 2.Universal Compatibility: The NURSAL tens unit replacement pads are compatible with all muscle stimulators of NURSAL, Belifu, NueMedics, TECHCARE, MEDVICE, TENKER,TECBEAN on the market that use the industry standard 3.5mm snap-on connectors 3.Premium Quality: We're always looking for new ways to bring our customers incredible value! Each pad is flexible and soft to the touch, helping you get the most from your TENS or EMS unit. They also feature durable cloth backing and come with re-sealable packaging for a longer lifespan 4.Safety Certification: When using NURSAL TENS pads, you get fast pain relief, and are further protected by not having to ingest potentially harmful additives or consume prescription medication. They are good sticky, quick to grab, easy to peel, and dry-out resisting 5.20 Pieces Valued Pads: Totally 20 pieces of pads, coming in small*4 (1.2''—1.6''), medium*12 (1.6''—1.8''), and large*4 (2''—4'') sizes, the electrodes can target different massage locations on the body for a better massage experience Details: Those NURSAL tens replacement pads are companion for most TENS units or Electrical Muscle Stimulation Machines that use the industry standard3.5mm snap on connector. Our NURSAL tens pads also compatible with TENS of Belifu AS1080, HealthmateForever NK10G, TechCare Massager, TENKER, MEDVICE, Massage Therapy Concepts BD17093, TEC.BEAN, KEDSUM, EUNON and more. Notice: Diameter of the snap hole for those electrode pads is about 3.5MM. TO BE ELIGIBLE FOR REFUND, THIS ITEM MUST BE RETURNED TO THE SELLER IN ITS ORIGINAL CONDITION AND PACKAGING.