The boom lamp has been an industrial classic for more than a century, & for good reason - they are beautiful to look at, & just plain useful! My handmade versions update this iconic form in modern materials & finishes. An elegant addition to your space that provides light right where you need it! This articulating boom lamp can be mounted to a wall, desk, headboard, etc., or hardwired. The solid brass arms measure 18 & 24 as pictured, or choose the 24/30 length. The joints are solid brass & allow the light to articulate fully. The socket is brand new, solid brass, & U.L. rated. The parabolic shade is also solid brass. Each light is wired with twisted black cloth covered cord & a quality black phenolic plug. There is a rotary on/off switch located on the socket. Accepts a standard light bulb (E26 socket.) A light bulb is not included unless you are located in California (California orders ship with a CFL bulb.) The socket & wire are rated for 240V, so this light will work internationally with a change of plug or adapter. The dimmer versions are built with a dimmer insert inside the socket. The dimmer inserts are rated for US 120V supply only - they will not work with 240V. The hardwired version comes with an integral 5 wide x 1 deep cylindrical brass wall plate (instead of the pronged wall flange.) These extension lamps are extremely versatile - install one or a pair in your living or reading area, or as a bedside lamp! They can be posed many different ways & provide excellent illumination. Form & function combined in a refined take on industrial style! Wall Lamp - Adjustable Bedside Extension Boom Articulating Sconce Industrial Brass Scissor Light