40 Watt, 130 Volt, 2600 Kelvin, 100 CRI, 4,000 Average Rated Life Hours, Medium (E26) Base Dimmable With a patented spun-thread design your Spunlite bulb provides the look and feel of an old-style gas flame 10 - Incandescent C15 Amber Light Bulbs Bulbrite's Spunlite Series of specialty chandelier bulbs utilizes a spun thread design that creates a unique warm glow, mimicking the look and feel of an old style gas flame.