E14 Small Edison Screw Brass Lamp Holder with 0.4" Entry | Mullan Lighting
E14 to E12 Base LED Light Bulb Lamp Adapter Holder Socket Converter - Amazon.com
E14 to E14 Extension Socket E27 to E27 Adapter Lamp Holder E27 E14 Bulb Socket Converter Lamp Base Plug Socket LED Light - AliExpress
Amazon.com: Hai Lan Screw Lamp Base E14 Light Bulb Screw Lamp Socket Surface Fixing Base Light Bulb Socket Holder Adapter, Black : Tools & Home Improvement