●Includes flush gun, hose, canister and canister adapter, fill canister with flushing material, pressurize with shop airchuck and flush each component. designed to work with any light weight flushing agent which can be mixed with pressurized air. excellent for quickly and effectively removing refrigerant oil debris during retrofitting or compressor replacement, flush gun is simple to use and will hold up through many flush procedures ●AC-21001 : canister and canister adapter assembly ●AC-21002 : hose assembly ●AC-21003 : flush gun assembly