1. leva del cambio   chain   gear lever   helmet   lock   Hint Half-n-half Clue   2. raggio   tire   valve   spoke   horn   Half-n-half Clue   3. pompa   valve   cable   pump   tricycle   Half-n-half Clue   4. triciclo   inner tube   tricycle   pedal   lock   Half-n-half Clue   5. casco   valve   wheel   helmet   shock absorber   Half-n-half Clue   6. ammortizzatore   chain   sprocket   shock absorber   valve   Half-n-half Clue   7. freno a mano   handbrake   tire pressure   tire   sprocket   Half-n-half Clue