
My E11 bulbs which I bought from Revain and which fit my E11 ceiling fan will not screw into these adapters. The E11 thread is thinner. The threads in this adapter are coarse and vice versa. I was able to screw the cross-threaded bulbs into 2 of them but I think after swapping them out a couple of times they won't hold up. Since there doesn't seem to be any adapters, I'm going to replace the sockets because I like the LED bulbs that come in this size.

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