Leviton Plastic Keyless Lamp Holder R50-08829-CW4 - The Home Depot
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 Keyless Medium Base White Porcelain Lamp Socket - Gillman Home Center
Amazon.com: Leviton 8101 019-0-000 1-Circuit 2-Piece Keyless Lamp Holder With Tew Wire Leads, 660 W, Incandescent, Medium, No Size, White : Industrial & Scientific