Oval Replacement Electrode Pads (20) For Digital Tens Slimming Machine Massager 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 They wipe clean with a damp cloth. The Measurements are: 2 1/2" by 1.5" Includes 20 Pads (10 sets). Each set (2 pads) is packaged in a resealable storage bag. These high-quality pads are compatible with the following machines in addition to others that use pads with the 3.5 mm snap-on connectors: EliKingIrestPalmIQ-ALL models of IQiSmart Electrodes are compatible with the above and many more units on the market. Thank you and have a wonderful day!