... into the female panel plug 3.different sizes for you DC power cable with screw lock1.2.1*5.5 or ... and low frequency electronic elements and wires and cables,including F connector,TV plugs and jacks ,splitters, matching transformers,RCA plugs ... and jacks, Phone plugs and jacks,DC plugs,AC plugs ,AC sockers ,AC adaptors, banana plugs ,banana ...