Ключевые слова: background, bearing, chrome, circle, closeup, cog, detail, drive, element, engine, engineering, equipment, gear, hardware, imprint, industrial, industry, iron, machine, machinery, mechanic, mechanical, mechanism, metal, metallic, motor, object, obsolete, old, part, parts, print, production, repair, retro, ring, roller, rollers, round, set, stainless, steel, structure, technical, technology, transmission, wheel, workshop,