Ключевые слова: background, bicycle, cassette, chain, chain kit, chrome, closeup, cog, component, concept, cycling, dark, detail, disc, drive, equipment, gear, gear wheel, group, industrial, industry, iron, machine, machinery, macro, maintenance, mechanic, mechanical engineering, metal, metallic, motorcycle, old, part, power, rear, repair, steel, technology, transmission, transport, vehicle, wheel, workshop,