Cal Test Electronics CT3887 4mm Sheathed Banana Jacks accept sheathed or standard banana plugs. These banana jacks offer a Ø2mm x 12mm short pin termination for soldering to a wire or onto a PCB. The CT3887 banana jacks can be press-fit into both plastic and metal panels. These banana jacks are 1000V CAT IV rated. The CT3887 banana jacks are available in nine colors.