ARCADIA Lamp Pro Ceramic Lamp Holder & Bracket up to 250 watt - Roger's Aquatics & Pet Supplies
3742 - Hubbell - Lamp Holders
Wireless Environment announces battery-backed LED lamp socket for emergency lighting | LEDs Magazine
IS251M - Metal Shell Medium Base Turn Knob Electrolier Incandescent Light Socket - E26 Lamp Base - 1" Base Diameter - 660 Watt 250 Volts Max - Chrome Metal - cULus Listed - Etlin Daniels
3 Pcs E17 to E26 LED Bulb Base Adapter Converter Light Socket Lamp Holder - Newegg.ca