Leviton 2 Pin, 250 VAC, 660 Watt, Medium Base, Keyless Lamp Holder Incandescent, Screw Mount 9874 - 57271520 - Penn Tool Co., Inc
Leviton 3152-8 - 1-Piece Bracket Mount Porcelain Keyless Medium Base Lampholder
Leviton 9880 Medium Base, Two-Piece, Keyless, Incandescent, Unglazed Porcelain Lampholder, Surface Mount Low, Single Circuit, Back Wired, White Pack of 1 - Medium Light Socket - Amazon.com