This Cooling System Vacuum Purge & Refill Kit from Draper is expert quality. It is designed to dramatically reduce cooling system refill times by stopping air-locks from developing meaning you can avoid time consuming cooling system bleeds. The unit plugs easily into an air line & then attached to the cooling system to create a vacuum. The filler hose is connected which allows pre-mixed coolant to flow easily into the system. The set comes supplied with a gauge, 1.3m of clear hose, four adaptors & hose end filler. The whole set is packed in a handy carrying case.