Includes flush gun, hose, canister and canister adapter. Fill canister with flushing material, pressurize with shop air and flush each component. Excellent for quickly and effectively removing refrigerant oil and    debris during retrofitting or compressor replacement. Flush gun is simple to use and will hold up through many flush procedures Designed to work with any light weight A/C flushing agent which can be mixed w/pressurized air.  A must use when replacing a failed compressor, ensure all the debris from the damaged A/C compressor is removed.