Review on Enhanced Compatibility: Electop E11 E12 Adapter Converter for Seamless Socket Conversion by Daniel Fung

Good price, perfect size (which means it doesn't add bulk to your lamp) and arrived quickly. And I've managed to get it working with a few lamp/socket combos. Apparently the pin in the adapter doesn't easily make contact or reach the e12 bulb I was trying to put in the e11 socket. I got one of the adapters working in one of three outlets! It must be ensured that the lamp is in contact with the converter adapter and that the converter is in electrical contact with the e11 socket. It really works! (Review modified on 07/13/16)