Features and Benefits:Perfectly suited for quick and efficient cooling system flushingAlso usable in washing engines and even shop floorsTwo simple connections: one to shop air and one to a typical water faucetCreates a unique vortex air/water blast for powerful cleaning applicationsThe tool can also be used to vacuum by turning the venturi inside the gun in the opposite direction; air flow is reversed to create a strong vacuum Perfectly suited for quick and efficient cooling system flushing. Simply attach it to radiator or heater hoses and you’re in business. Also usable in washing engines and even shop floors. Two simple connections: one to shop air and one to a typical water faucet. Creates a unique vortex air/water blast for powerful cleaning applications. Can also be used to vacuum by turning the venturi inside the gun in the opposite direction. Air flow is reversed to create a strong vacuum.