Check the listing for details. 20 Large Replacement Tens Unit Electrode Pads for Pulse Massager White Cloth. Color: White, Condition: New. Listed at 18.99 USD. 20pcs White Cloth Replacement Electrode Pads 5x9cm For Tens Massager Machine Features: Non-woven Fabric,soft and comfortable and will not irritate Unlike others, not plastic 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 Connector hole diameter: 2mm Package includes 20pcs/10pairs WARNINGS/PRECAUTIONS:Check with your doctor before using this product, or any other tens product on the market !1. Never use this product if you have a pacemaker or any digital implant.2. Check with your doctor first if you have any Epilepsy or Heart problems.3. Keep away from Children4. Do not attempt to modify the performance of this product.5. We do not Guarantee that this device will cure/help your condition.Note: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!