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
Leviton - E-26 Porcelain Keyless Lamp Holder with Screw Terminals
Leviton Keyless Medium Base White Porcelain Lamp Socket | Ivey Lumber Company