An ingenious adjustment system without limits. all arms including lampshade are individually adjustable. the arms are mounted on a heavy steel plate. the luminaire has been rewired according to current safety standards and can be used in the usa and all other countries around the world. all types of light sources e27 porcelain lamp socket can be used (led, energy-saving lamps, etc.). This piece has an attribution mark, i am sure that it is completely authentic and take full responsibility for any authenticity issues arising from misattribution, european plug (up to 250v).the wiring of this item may be original and might need replacement, if not specified otherwise.