COMPATIBLE 3.5mm QUAD 4 SNAP LEAD CONVERTER CABLE (4 Snap on Connection Lead) for OMRON HV-F124, HV-F158E, HV-F124P, HV-F125, HV-F126, HV-F127 HV-F127, HV-F128, PM3030 w/ (8) ELECTRODES Note:Please be sure your model has 3.5mm jack, works with models with 3.5mm jack-will not work with PM3031 Model Once you replace your Omron Cable with this cable, the Electrodes I sell are much more cost effective, and you will save a SIGNIFICANT AMOUNT OF MONEY using these pads instead of the Proprietary Omron Brand Pads. 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-F122 These are great quality pads that work with the supplied 3.5mm lead cable. These electrode pads work with this lead cable that connects to the Omron Unit. Pads have a thick layer of non-irritating conductive gel that adheres well to your skin, but leaves no sticky residue when the electrodes are removed. Pads are Reusable and fit 3.5mm snap connect lead(included) Pads wipe clean with a damp cloth. The Measurements of pads are: 2" x 3". Includes 8 Pads (4 sets) and 4 snap connection lead cable with 3.5mm Plug to connect to Omron Unit.. Each set of pads (2 pads) are packaged in a resealable storage bag. Thank you and have a wonderful day!