73101 Panel Mount Double 4mm Banana Jack Pomona Electronics 73101 Panel Mount Double 4mm Banana Jack features a convenient one-piece rigid design ideal for screw-mounting onto pre-drilled panels. This double banana jack is made of machined brass and includes hex nuts and a washer. Pomona Electronics 73101 banana jack offers a 30VAC/60VDC voltage rating and 25A current rating. This banana jack also provides solder turrets for solder connections.