Designed to retrofit into an ordinary edison screw or bayonet cap fitting, these dimmable LED GLS bulbs use an innovative LED filament which allows for a full 360 degree spread of light, just like a traditional incandescent light bulb. However, unlike a traditional incandescent, these bulbs use very little electricity, making them extremely cost effective to run. These bulbs are perfect for domestic or commercial use adding primary light or ambiance at a fraction of the energy cost. These have the potential to replace traditional 60-100W incandescent light bulbs.