This petite outlet is smaller than the large China plug outlet but larger than Cir-kit concepts miniature plug. It becomes an alternative to the miniature plug and is easier to work with. They had a problem in the past as the plug did not always make contact when plugged in to the socket. I believe I have corrected that issue by drilling a larger hole in the plastic cover so the pins of the plug can contact the brass. Because of the extra size, they are much easier attaching the plug to any lamp and work the same as the larger China plug.
Check out MH44007 for the plug that fits this outlet
Check out MH44009 for the outlet with wire leads and plug attached. (Extension cord)