ELECTRODE LEAD CABLE (3.5mm Plug) + MASSAGE PADS COMBO (8 LG, 8 SM PADS, + CABLE) This is a nice Electrode Pad/Cable Combo with 8 Large and 8 small 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. Also included are 8 smaller pads, nice for treatment/therapy for more concentrated area of current. + 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 3.5mmEach Pair of Pads are packaged in a resealable storage bag. Includes 8 LARGE Pads (4 sets), 8 SMALL PADS (4 SETS) and 4 Snap Connection 3.5mm Electrode Cable Note:Please be sure your model has 3.5mm jack, works with models with 3.5mm jack-Cable will not work with Omron PM3031 ModelHere is some feedback from one of our recent customers. HERE IS A FULL LIST OF MODELS THAT THIS CABLE IS COMPATIBLE WITH(NOTE-CABLE IS COMPATIBLE W/ SUPPLIED PADS IN THIS AD ) PM3030, HV-F127, HV-F128 HV-F124, HV-F124P HV-125, HV-126, HV-F002A HV-F115 HV-F116 HV-F122 Thank you and have a wonderful day!