The OTC 6043 Blast-Vac Multipurpose Cleaning Gun is a tool that can be used for cooling system flushing and quick and efficient cleaning. It can be attached to heater or radiator hoses and creates a vortex air/water blast for powerful cleaning. The gun can also be used for vacuuming by reversing the venturi inside the gun. The item is new in a sealed box!! Please see all the pictures, what you see is what I will ship.