Replacement Electrode Pads for Digital Massager Units and TENS Electronic Therapy Machines and Pain Relief Massager These are great quality pads for TENS unit, Digital Massager, Pain Relief Massager or Physical Therapy Pulse Massager. The Pads come with a thick layer of non-irritating conductive gel that adheres well to your skin, but leaves no sticky residue when the electrodes are removed. Pads are Reusable They wipe clean with a damp cloth. The Measurements are: 2" x 3". Includes 16 Pads (8 sets). Each set (2 pads) is packaged in a resealable storage bag. These high-quality pads are compatible with the many types of digital massage machines Thank you and have a wonderful day!