This National Union NX-280 Vacuum Tube Globe Full Wave Rectifier is a vintage electronic unit that has been tested and proven to be extra strong. It is a single unit with a Type 80 model and was manufactured in the United States. The tube can be used for various purposes, and its brand name is National. It comes with one unit quantity and has no California Prop 65 warning. This vacuum tube is suitable for vintage audio and video equipment, as well as for various other applications.Satisfaction guaranteed returns accepted Lot B4