A representative of the GCN Network is talking and demonstrating how to use tools to fix bike wheels.  He is standing near an elevated blue bike with several tools displayed on a wall behind him.  He is using an Allen key to lever the bike tire.  He rotates the bike tire and then uses the Allen key to adjust the screws.  Then he resets the pistons of the wheel to realign them.  Then he precisely fits in the attachment into the wheel.