Ключевые слова: 1 person, 2530 years, adjustment, adult, assembling, assistance, bar, bicycle shop, bike, biking, bolts and nuts, care, caucasian ethnicity, competence, dexterity, frame, indoors, industrial facility, industry, installing, instruments, iron, key, lifestyle, maintenance, male, manual worker, men, mountain, parts, repairman, restore, salesman, screw, screw driver, service, shop, shop owner, small business, sport, stems, store, technician, twist, usa, work, work tool, worker, worktool, young,