Royal Designs, Inc. Edison Base Dimmer Sockets with unique vintage cast metal shells are compatible with any medium base incandescent, or "dimmable" LED light bulbs. The bracket has a 1/8 IP threaded hole on the bottom so it will fit any standard lamp pipe. The socket is rated for up to a 150W bulb. Available in 5 different designer finishes. Additional Details ------------------------------ Bullet point: Royal Designs, Inc. Edison Base Dimmer Sockets with unique vintage cast metal shells are compatible with any medium base incandescent, or "dimmable" LED light bulbs. The bracket has a 1/8 IP threaded hole on the bottom so it will fit any standard lamp pipe. The socket is rated for up to a 150W bulb. Available in 5 different designer finishes. Product description: Royal Designs, Inc. Edison Base Dimmer Sockets with unique vintage cast metal shells are compatible with any medium base incandescent, or "dimmable" LED light bulbs. The bracket has a 1/8 IP threaded hole on the bottom so it will fit any standard lamp pipe. The socket is rated for up to a 150W bulb. Available in 5 different designer finishes.