COMPATIBLE 3.5mm QUAD 4 SNAP TYPE LEAD CABLE for OMRON HV-F178, HV-F128, PM3030 w/(4) ELECTRODES Once you replace your Omron Cable with this cable, the Electrodes we 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. This Cable Connects to these Pads (which are cost effective) for your Unit Note:Please be sure your model has 3.5mm jack, works with models with 3.5mm jack-Cable will not work with Omron PM3031 Model 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 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 4 Pads (2 sets) and 4 snap QUAD connection lead cable with 3.5mm Plug (Be sure your Plug is 3.5mm) to connect to Omron .. Each set of pads (2 pads) are packaged in a resealable storage bag. Thank you and have a wonderful day!