These lights are composed of a solid wood or hand-blackened steel base with a cast-concrete "shade". The cast is cured and then systematically smashed with a Hammer, exposing the rebar creating voids for the light to escape, making each piece truly unique. The Scarpa light uses LED bulbs and nylon wrapped cord.This is a bespoke piece so custom dimensions, materials, colors and finishes can be accommodated. Please inquire for pricing.All Stefan Rurak Studio pieces are designed and handcrafted in Brooklyn, New York.