LED filament light bulb is designed to resemble a traditional incandescent light bulb with visible filaments, for aesthetic and light distribution purposes. It also comes with the different socket, E14 or E27. "E" stands for "Edison" and "xx" indicates the diameter in millimeters as measured across the peaks of the thread on the base.

1. E14 refers to the base diameter of 14mm

2. E27 refers to the base diameter of 27mm