This is a nice Electrode Pad/Cable Combo that includes 2 dual 3.5mm Electrode cables and 24 Large 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. Each Pair of Pads are packaged in a resealable storage bag. Includes 24 LARGE Pads (12 sets) and 2 Dual Snap Connection 3.5mm Electrode Cables Please be sure your jack is 3.5mm Note: These high-quality pads are compatible with many brand name Digital Massagers with leads that connect to 3.5mm snap pads. Feel free to message me through eCRATER Messaging if you have questions on compatibility. Thank you and have a wonderful day!