This is a nice Electrode Pad/Cables Combo with 16 Large and 16 Small Oval Electrodes. They are 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. Oval Pads are Great for application to fingers, toes, or small joints, or direct application. They are good 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). Electrode Snap diameter connection is 3.5 mm. Small Oval Pad Measurement are : 30mm x 40mm or 1.18"x1.57" Snap Diameter Connection is 3.5mm Each Pair (Set) of Pads are packaged in a resealable storage bag. Includes 16 LARGE Pads (8 sets), 16 SMALL Oval Pads (8 Sets) Includes 2 OF THE 4 Snap type Connection 2.5mm Plug Electrode Cables Note: This combo is compatible with many brands of Digital Massager Machines that have 2.5mm input jacks Please make sure to check if your unit has 2.5mm Jack input. Thank you and have a wonderful day!