Size: ENS unit electrode pad: 5*5cm 10PCS=5Pairs=5Bag 20PCS=10Pairs=10Bag 30PCS=15Pairs=15Bag 40PCS=20Pairs=20Bag 50PCS=25Pairs=25Bag 100PCS=50Pairs=50Bag Universal Compatibility with Pigtail Pin Hmeily 's premium quality TENS/EMS unit electrode pads are widely compatible with various tens units across the s. TENS Unit electrode pads like Hmeily universal replacement electrodes, perfect for all EMS, TENS & IF units using pigtail pin type Connectors. Safe and effective These electrode pads provide adequate charge delivery not just with efficacy but also with safety, preventing the incidence of burns, shock and other injuries. The right amount of charge delivery makes the therapy more effective and achieves the results in lesser time and brings relief to the user almost instantly. Whole Body Treatment These high quality TENS electrode pads which make them appropriate to use at almost any body part to deliver the desired therapy. You can apply these on your neck, shoulder, back, thighs, knees or legs and feel the soothing effect of therapy almost instantly. Non-Allergic & Pre-Gelled These latex free electrode pads have got non irritating gel and is safer on skin preventing the incidence of allergy and skin reaction as compared to other pads. The Gentle on skin property makes the pads popular amongst those with sensitive skin. Soft like silk These ultra high quality electrode pads are soft on skin and quite comfortable to use. The white cloth backing the electrodes not just improve the comfort but also adds to the longevity of the product and help them remain comfortable to apply even after multiple use