Ключевые слова: abstract, arrangement, back view, backgrounds, blue, connection, copyspace, curve, decoration, diversity, equipment, fastener, green, hexagon, home improvement, industry, large group of objects, lots of, metal, metallic, mirroring, nut, rear view, reflective, rivet, screw, screw nut, shiny, spiral, stack, steel, still life, technology, threaded, variation, work tool,