Check the listing for details. REPLACEMENT PADS/ELECTRODES (24) for TENS Unit and Digital Massager. Condition: New without box. Listed at 22.97 USD. Replacement Electrode Padsfor Digital Massager Units/TENS Electronic Therapy Machines These are nice electrode pads that are durable and flexible and are excellent for applying around joints such as wrists or elbows. These pads can be used for areas of the body that are flat, like back or thighs. They are great quality and 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. Electrodes are Reusable Electrodes wipe clean with damp cloth. Measurements are: 3" (7.5 cm) by 1.77" (4.5 cm). Pin diameter is 3.5 mm. Included are 24 Pads (12 sets). Each Set (2 pads) is packaged in a resealable storage bag. These high quality pads are also compatible with digital massagers/leads that connect to 3.5mm snap massage pads.