Ключевые слова: abstract, alloy, aluminum, backdrop, background, blank, chrome, cog, cogwheel, construction, design, dirty, engineering, frame, gear, gray, grunge, industrial, iron, machinery, macro, material, mechanic, metal, old, part, pattern, plate, precision, rivet, rough, rustic, scratch, screw, sheet, shiny, silver, stainless, steel, surface, texture, tile, tool, vintage, wall, wheel, work,