This Westinghouse Lighting Porcelain Fixture Socket is ideal for replacing a broken socket or assembling a new light fixture. It features durable porcelain construction and two screw terminals. A convenient 1/4-IP hickey makes for easy installation. This socket measures 2-3/16 in high and is compatible with medium-base light bulbs. CUL listed for safety, it is rated for 660 watts maximum and 250 volts.