Ключевые слова: adult, bicycle, bike, biking, black, brake, business, chain, closeup, cycle, derailleur, details, disc, equipment, frame, gear, gearshift, hardware, industrial, maintenance, man, mechanic, mechanism, men, metal, parts, professional, rear, repair, retail, service, shop, sport, store, technician, teeth, tire, tool, tools, up, wheel, work, worker, working, workshop,