Check the listing for details. +BONUS+ELECTRODE LEAD WIRE Cable 2.5mm for Digital Massager TENS Snap Connection. Condition: New without box. Listed at 9.97 USD. ELECTRODE LEAD WIRE Cable 2.5mm for Digital Massager TENS Snap Connection Measurement : ---Wire length : about 1.30m ---Plug diameter: 2.50 mm --- ---Snap Connect Standard measurement diameter: about 3.7 mm (connects to electrode) --- Note: We ask that Please be sure you check your plug size. Plug is 2.5mm Lead Cable ( like in the picture)The lead wire connects to electrodes with standard 3.5mm inner diameter of the snap (standard)connect **AND, AS AN ADDED BONUS*** => A SET OF 2 SMALL OVAL ELECTRODES WILL BE INCLUDED WITH YOUR ORDER DOUBLE YOUR ORDER AND SAVE (DISCOUNT FOR PAIR OF LEADS)==> [CLICK HERE FOR LISTING] (http://www.ebay.com/itm/261819776464?ssPageName=STRK:MESOX:IT&_trksid=p3984.m1559.l2649).