Constructed of machined and stamped brass and a lacquer coating to prevent tarnish with solid brass knurled adjusting knobs. The interior surface of the lamp shade is white enamel to reflect more light. Prewired with integral on/off switch. Includes a 15-watt DC double contact bayonet style bulb. Designed for bulkhead or wall mounting. Installs with three #6 RH fasteners (not included). 12VDC. A 3-9/16" B 2-15/16" C 4-3/8" D 3-3/4" Finish Brass