A man demonstrates how a piece of equipment won't hit the wall and get stuck.
A man demonstrates how to use a cleaning device with a commentary.
A man tells how to operate a Hummel floor sander so it doesn't hit a wall.
A man is demonstrating how the machine on the floor will not hit the wall.
A man giving instruction on how to sand close to the wall using a  Hummel sander.
A person is demonstrating how to use a hummel and how not to get it stuck.
A man demonstrates how to properly push a large floor sander without bumping the wall.
A person is pushing a large machine on the floor beside another person.
A large floor sander is pulled back and forth on a wood floor butting up against a 2x4
A man is explaining how a person will not hit a wall with the machine as he moves it back and forth.