I moved into an apartment with two GX23 fluorescent tubes that flickered and made noises like I was watching a horror movie for the first five seconds. . Since it's not worth suddenly converting an apartment to something more logical just to be able to use LED bulbs, I thought I'd try to find an adapter for the GX23 that would turn it into a standard socket used by all bulbs becomes. Couldn't find them locally but was able to find this on Revain and it worked great. I was able to replace the old fluorescent tube with a standard LED bulb which is more energy efficient and works great with no flicker while being much brighter. Now my apartment is finally fully LED and not a mixture of incandescent lamps and fluorescent tubes.