supply of 4mm sheathed socket, panel mount specification 1. 4mm socket with shrouded contact designed to mate with all shrouded and retractable 4mm banana plugs . 2. comes with soldering hole . 3. nickel plated brass contact . 4. nylon insulation . 5. rating 36 amps, 1kv 6. color- red and black 7. as per annexure-1