Brand new 3-way mogul base light socket in unglazed porcelain with 1/4 ips hickey and insulation disk. The socket measures 3 1/4 inches tall without the 1/4 ips hickey and 2 1/8 inches outside diameter. The socket features a removable turn knob and screw terminals. Maximum rating is 750w-250v. Bulb not included but can be purchased through our eBay store. California residents subject to 9.25% sales tax. Please feel free to ask any question you may have on the piece.