This is a nice Electrode Pad/Cable Combo with 4 Large and 4 Small and durable and flexible electrodes that 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. Large Pad Measurements are: 3" (7.5 cm) by 1.77" (4.5 cm). Snap diameter connection is 3.5 mm. Small Pad Measurement are : 1.37" wide around Snap Diameter Connection is 3.5mm Each Pair of Pads are packaged in a resealable storage bag. Includes 4 LARGE Pads (2 sets), 4 SMALL PADS (2 SETS) and (2) Dual Snap Connection 2.5mm Electrode Cables These high-quality pads are compatible with many brand name massagers on the market with leads that connect to the 3.5mm pin snaps on the pad. Feel free to message me if you have questions on compatibility. Thank you and have a wonderful day!