Ключевые слова: abstract, background, big, black, border, brown, chain, chains, close, closeup, concept, connection, design, detail, dirty, durable, element, equipment, grunge, heavy, industrial, industry, iron, isolated, large, link, links, lock, macro, metal, metallic, object, old, pattern, power, protection, rough, rust, rusty, safety, secure, security, steel, strength, strong, symbol, texture, thick, vintage, white,