Crafted with stainless steel and brass, this strong valves opener features a leak proof chlor seal and 1 / 4 connector for stable in HVAC systems and refrigeration maintenance The metal body with cover combines erosion resistance with lightweight handling, while 1 / 2 " open screws secure secure installation in low pressure applications Perfect for servicing air conditioning units, refrigeration pipelines, and water supply systems requiring temperature resistant valves operate up to 150°F Ideal for professional HVAC technicians and enthusiasts seeking industrial grade tools for routine maintenance or emergencies repairs Engineered with reinforced brass cores and accuracy machined threads, this multipurpose tool delivers outstanding moment control during valves adjustments in commercial / residential settings, Manufacturer: YanFengPro