Order brass finish lamp electrical sockets: On/Off, Push Thru, Pull Chain or 3 Way. Use with standard medium base (Edison E26) light bulbs, LED or Incandescent. Fits on industry standard threaded lamp pipe which is 3/8" wide. RECOMMENDED: LED bulbs are making many other light bulbs obsolete including the once popular 3 way bulbs. We no longer recommend 3 way bulbs or 3 way sockets although both are still available. Use only LED bulbs and discontinue using Incandescent and CFL bulbs. There are many other electrical sockets available to fit all kinds of lamps and lighting fixtures, ask. *** FREE SHIPPING - 48 STATES USA - HI & AK ask for quote Order Quality Light Bulbs & Hardware |