A fire hook is a tool which is designed to be used by firefighters who need to be able to gain access to a space or clear debris.
The fire hook is a very versatile tool. It can be used as a probe or prying tool to get around doors, windows, and other openings. It can also be used to quickly tear through walls and other obstacles, and for tasks such as cutting into ceilings and floors, tearing into ventilation systems, and so forth.