Item description for Royal Designs, Inc. 3 Way Lamp Socket for Incandescent or LED Bulbs, Metal Knob,

Royal Designs Edison Base 3 Way Sockets with unique metal shells are compatible with any medium base incandescent or LED light bulbs. The bottom shell has a 1/8 IP threaded hole so it will fit any standard lamp pipe. The socket is rated for up to a Max 250W bulb. Available in 5 different designer finishes.