E26 LED light bulbs and E27 LED light bulbs are Edison based LED lights that have a medium screw base. This is a standard household light bulbs base for traditional incandescent lights. The E stands for Edison and the 26 and 27 refer to the diameter of the screw base. In some, but not all cases an E26 LED light bulbs have a slightly smaller voltage range to include only 100VAC to 130VAC where E27 LED lights will support up to 80VAC to 240VAC voltage range. This is not universal.
Porcelain lamp holder: The most durable and long lasting shell, porcelain is more heat and weather resistant than any other shell type. Where the light is outside or hangs with a bulb facing down, a porcelain socket is highly recommended.
James supply the lamp holders, bulb holders, E27 lamp holder and GU10 lamp holder 30 years!
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