Online store: AliExpress
Jiguoor 5 шт + медный материал E27 к E14 патрон лампы конвертер винтовой патрон конверсионный светильник лампа базовый тип адаптер
2.4 USD
Instead of the 5 pieces mentioned on advertisement, arrived only one. It seems that this behavior has already happened with another buyer. Seller simple did not answered the request of explanation. Partial refund was granted by Ali, after respective process.