Check the listing for details. Tens Electrode Pads Large Snap on Replacement For Tens Unit EMS Pulse Massager. Color: White, Condition: New. Listed at 6.99 USD. Replacement Electrode Pads 5x9cm White Cloth For Tens Massager Machine Features: Non-woven Fabric,soft and comfortable and will not irritate Self adhesive, high conductive, convenient to use and reusable. Re-usable, Long Life Excellent conductivity Bio-compatible, Dry out Resisting Molded wire connector for reliability and durability Useful and safe accessory for medical care. Fits most TENS, EMS & IF Units using pigtail pin type connectors Type: electrode pads Color:White + Black Material: silicone gel + Non-woven FabricSize: 5x9cm/2*3.5in Snap hole diameter: 3.5mm Package includes 4/10/20pcs as you chooseNote:1. Cleanse your skin before using electrode pads for better results.2. Normally each pad can be used for 20-30 times.If they become unsticky,just throw them away and use a new set.3. Please allow 1-2mm measuring deviation due to manual measurement. 4.There maybe slight color difference because of light ray, but it does not affect use!