Precise and affordable: the nitrogen is precisely controlled to achieve more stable and precise purging and welding effects, avoiding unnecessary waste. Sturdy and : All-metal structure, and wear-, compact and , can be placed in tool bags, tool boxes, pockets and other places you find convenient without worrying about any wear or breakage. Extend the service life of HVAC equipment: Help nitrogen smoothly into pipe fittings during purging and brazing, remove refrigerant, moisture and debris, prevent oxidation and equipment failure, keep pipes clean, extend the service life of metal pipes, and help you save a fortune on estimated repair costs. Easy to use: Just connect a standard 1/4' refrigerant hose and a standard nitrogen pressure regulator to quickly switch between the three modes of "purge, braze, close", unlike nitrogen purge tools with dials so troublesome.No fumbling with a indicator valve. Comfort and peace of mind: The knot design is ergonomic, Weight: 0.440924524 pounds, Manufacturer: Teuypty