A man talks while we view an object on the table.   The man picks up and holds the object.   The man shifts the seat of a bike.   The man uses the object from the table to tighten the seat of the bike.   The man checks the bike seat for looseness.   The man begins spinning the seat of the bike and removes it.     The man puts the seat back on the bike.   The man uses the tool to adjust the seat on the side.   The man checks the seat for tightness a last time.