Screw ES Light Bulb Socket to E14 E27 B22 MR16 GU10 G9 Lamp Adaptor Converter
E27 to Either E14, B22, E27, MR16, GU10 or G9 Lamp Socket Fitting Extender/Adaptor/Holder. e.g. B22 male to E27 female adaptor, is to allow an Edison screw light bulb to be used in the bayonet socket of your lamp/luminaire.