E27 Ceiling Receptacle Light Bulb Socket Standard Sizes For lights 3inch(3-1/2),4inch(4-1/4) | Shopee Philippines
Power Gear 3-Way Lamp Socket, Medium Base, Turn for Low-Medium-High Light Settings, For Floor and Table Lamps, DIY Project, UL Listed, Brushed Gold, 54372 - Light Sockets - Amazon.com
The $5 Light Socket That Somehow Works in Every Room | Architectural Digest