Check the listing for details. SQUARE SNAP ELECTRODE MASSAGE PADS (8) FOR DIGITAL MASSAGER, TENS, EMS. Color: as pictured, Condition: New. Listed at 18.97 USD. 8 pc Square TENS Machine, Digital Massager Replacement Electrode Pads 5x5cm or 2"x2" ---Electrodes are Reusable ---They wipe clean with a damp cloth ---Measurements are: 5 cm by 5 cm or about 2" by 2".Snap Connect diameter is 3.5mm ---Includes 8 Pads (4 sets). Each set (2 pads) is packaged in a resealable storage bag. 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 BUY MORE AND SAVE==> [CLICK HERE FOR LISTING] (http://www.ebay.com/itm/251707944947?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1558.l2649) Thank you and have a wonderful day!.