Porcelain Medium Base Socket Extender

Leviton 128-I 15-Amp 660-Watt Twin Light-Socket Adapter, Ivory

Feit Electric ESL40TN/D 40-Watt Compact Fluorescent High-Wattage Bulb, Daylight

TORCHSTAR 2 Pack E26 to E26 Extender Adapter, E26 to E26 Edison Screw Converter Lamp Bulb Socket Lamp Holder, Fits LED/CFL Light Bulbs, Heat-resistant, Anti-burning, No Fire Hazard

Leviton 2005 Medium-Medium Base, One-Piece, Adapters/Extensions, Incandescent, Glazed Porcelain Lampholder, White

Fancierstudio 4 Socket Adapter 4 in 1 Adapter Holder E27 Bulb Lamp Light Socket Splitter For Photo Studio By Fancierstudio 6801

Medium Base To Medium Base Light Bulb Socket Porcelain Extender / E26 1 Inch Extension Adapter

TCP 68942ED CFL Spring A Lamp - 150 Watt Equivalent (only 42W used) Soft White (2700k) Spiral Light Bulb - Medium (E26) Base

General Hydroponics CALiMAGic Quart

ABI E26 Light Bulb Socket to 2-Prong US AC Power Cord Adapter with On/Off Switch, 12 FT Cable

Amariver Flashpoint 4 Socket Adapter - Converts 1 Socket into 4 - Use for Standard Socket Flourescent Bulbs