Ключевые слова: abstract, alloy, attached, background, black, cable, chain, circle, closeup, concept, connect, connection, dirty, gray, group, grunge, hard, heavy, industrial, industry, iron, key, lead, lines, link, linked, metal, metallic, nautical, network, objects, pattern, power, powerful, protection, puzzle, rings, row, rust, rusty, safe, safety, security, stainless, steel, strength, strong, surface, template, texture,