Early 1900s e40 brass and porcelain lamp socket, combined with modern italian 3-wire twisted silk electrical cord and metal ceiling rose. we built in a common e27 screw cap socket inside the e40 socket so that modern bulbs could be used, but it can easily be removed. please note that the bulb is not supplied. measurements: socket is 7cm/2.7´´ long, and the cord is 1m/39´´ long. condition: excellent. up to 250v (europe/uk standard).the wiring of this item may be original and might need replacement, if not specified otherwise.