Amazon.com: LED Light Screw Bulb Socket Adapter Converter--E40 to E27 : Tools & Home Improvement
E27 To E40 Light Bulb Socket Adapter Mogul Lamp Base To Medium Screw Holder Converter - Buy E27 To E40 Porcelain Socket,E27 To E40 Lamp Holder,E40 Screw Holder Product on Alibaba.com
TORCHSTAR 12-Pack E26/E27 to E39/E40 Adapter, Medium Mogul Base Socket Adapter Converter, Heat Resistant, for LED Bulb Lamp - Walmart.com
10pc/lot E27 to E40 Adapter ring E40 To E27 Lamp holder converter Large screw change Small screw stainless steel Conversion head|e40 to e27|e27 to e40e27 lamp holder - AliExpress
Amazon.com: LED Light Screw Bulb Socket Adapter Converter--E40 to E27 : Tools & Home Improvement
E40- E27 Plastic Screw Shell Lamp Light Bulb Socket Adapter - China LED Light Adapter and Lamp Socket Base
E39/E40 to E26/E27 Lamp Bulb Socket Adapter Converter