Derrick is made from solid brass It will not rust even when the salinity levels are high. It is a large round bulkhead light with a brass cover and with glass light diffuser. The fasteners are brass cross/Phillips screws. This light is manufactured entirely in Greece. The high gauge makes the fitting a bit heavy but robust and unbreakable. The finish or coating of the lamp has been applied using electroplating thus it will never peel off or crack. It can be installed on the wall, the ceiling, on a post, or on a boat. Both indoors and outdoors.