Satin string bulbs simulate the feel and charm of an old style gas light. The unique, silk-like threading wraps around the bulb and distorts the image of the filament into an elongated glow. Perfect for use in outdoor lanterns and exposed bulb chandeliers. This satin string bulb is a great option for antique restorations. The Bulbrite 431140 bulb is equipped with a heavy-duty 130 volt filament, allowing it to last longer when operated at 120 volts. With a 5,000 hour life, this bulb has nearly twice the lifetime of similar bulbs.