Check the listing for details. Replacement Electrode Pads (18) Small Oval (30x40mm) FOR TENS THERAPY MASSAGER. Condition: New without box. Listed at 15.97 USD. Replacement Electrode Pads (18) Small Oval (30x40mm) ISMART Massager Compatible ---Includes 18 Pads (9 Set) of Non Woven Oval Shaped cloth electrodes, Each set comes in Sealed Ziploc Bag ---Great for application to fingers, toes, or small joints, or direct application ---Professional style microcurrent or TENS Digital Massager compatible pads ---3.5 mm Snap Pin Connection on the Oval Pad connects to your electrode leads ---Each Pad measures 30mm x 40mm or 1.18"x1.57" ---Re-usable pads, they wipe clean with damp cloth ---These high quality pads are also compatible with digital massagers/leads that connect to 3.5mm snap massage pads. If you have any questions on compatibility please feel free to send me a message and I will be happy to help. Thank you and have a great day!.