Combine classic style, modern reliability, and energy savings with Feit Electric ST19 LED 40-Watt Equivalent Warm Light (2100K) M Shaped Filament Light Bulb. Our vintage filament bulbs are made with LED exposed filament and wrapped in a clear housing to deliver an elegant antique look and feel. We integrate innovative LED technology with a unique M-shaped filament, providing a natural lighting experience for those who want the benefits of LED and the look of vintage lighting. Filament LEDs will last for years and use just a fraction of the energy of an incandescent.