A skilled young man repairs a mountain bike with tools
Waist up of mature Caucasian man using stainless steel allen wrench while assembling leg prosthesis in small workshop
Close up of unrecognizable skateboarder girl unscrewing wheels on her longboard with Allen key or Hex key tool. Maintenance of professional skatboarding
Close-up portrait of a talented female skater repairing her skate with a T-key
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Unrecognizable mechanic at factory using allen wrench to tighten hexagonal bolts on metal equipment
