The delivery time was quite long, about 2 weeks if I remember correctly. The article came directly from China. At the request to cancel the article due to the long waiting time, I answered the seller (in very bad German) that I should refuse to accept. When the article at some point one called me, he was immediately tested successfully. No heat, grinding or similar suspicious.
I run with this adapter a 10W LED E27 in a floor lamp with an E14 socket. Even with prolonged use of 6 hours + no warming or anything else. Buy recommendation, but you should note the shipping time.