Feature: Allows to convert a E26 light bulb in a E39 mogul base fixture Light Bulb Adapter for Antique Floor Lamp Mogul Socket Solid Porcelain and Metal Can take up to 660 Watts and 250 Volts ALLOW THE USE OF MEDIUM BASE BULB IN MOGUL FIXTURE. THIS IS NOT A 3-WAY SOCKET, NOT FOR USE WITH 3-WAY BULBS. COPPER ALLOY NICKEL PLATED SCREW SHELL.