This is one transmitter charge lead from ProTek R/C. This charge lead has a DC style connector on one end (inner plug is Positive - 2.5mm, outer ring is Negative - 5.5mm) that will fit most radio systems, connected to 4mm banana plugs with high quality 22awg silicone wire. Be sure the check the polarity of your radio system charge connector when you plug this charge lead into your charger.