Ключевые слова: background, black, border, chain, chrome, concept, connection, element, frame, gray, heavy, icon, industrial, industry, iron, line, link, lock, metal, metallic, object, old, part, pattern, power, powerful, protection, pull, row, safe, safety, secure, security, shackle, shape, silver, slave, slavery, steel, strength, strong, symbol, tool, vintage,