2 in 1 E27 Lamp Socket Splitter Adapter Light Double Holder Y Base Bulb HOT | eBay
1pc E26/E27 2 in 1 Edison Screw Medium Socket Splitter Extender Extension Adapter Converter - Amazon.com
2 Pack Light Socket Splitter 2 In 1 E26 E27 Adapter Converter For Standard Led Bulbs 100v 240v Max 120w Heat Resistant Light Bulb Splitter | Quick & Secure Online Checkout | Temu Belgium
DiCUNO 2 in 1 E26 Socket Splitter Adapter, 2 E26 Standard Medium Base Bulbs in 1 Socket Y-Shape Lamp Holder Converter, Maximum 200W and 165℃ Heat Resistant Light Bulb Splitter 2PACKS: Amazon.com:
E-Simpo 12pcs G24d to E26/e27 Adapter(NOT GY24D) 2P CFL Socket Adapter 21.8mm G24 to E26/E27, GX24d to E27 Lamp Base Converter, Rohs. 2P in Cross,Need Bypass The Ballast! (12-Pack) - Amazon.com
No. 2 Size Oil Lamp Adapter (20100) - Antique Lamp Supply - Quality Lamp Parts Since 1952