50 Ohm RF coaxial BNC plug to 2 x 4mm plug 1.2m cable assembly consisting of a 50 Ohm nickel plated BNC plug with a silver centre contact on one end and two 4mm bunched piggy back style pin plugs on the other. This RS 50 Ohm RF coaxial BNC Plug to 2 x 4mm plug cable assembly uses RG 58C/U, URM76 or equivalent cable.