Is available in different colors, we decided for the white version. The interior, very rugged part (lamp holder with a short cable connection) is fixed with 2 screws on the ceiling or on the wall. Connecting lead, and then just wrap the housing (which can not be easily dented as the eponymous stew can) screws over it.
Very easy assembly required (appropriate drill for reinforced concrete floor :) and suitable for all kinds of lamps. At high ceilings and quiet high-intensity light sources can be selected, since the illuminated ceiling reduces the glare from the point light source.
