Brand new Professional HVAC Nitrogen Pressure Gauge Tester With Large Screen Display For Air Conditioning Systems R134a R22 R407C R410A Refrigeration Test Bench Tool 1/4 SAE Inch materials?Made of dur1able and reliable materials, ensuring the longevity and performance of the Nitrogen pressure Tester HVAC Systems Cold Test Table Tools. ?Convenient spherical structure valve?Featuring a spherical structure valve, this tester provides a simple and convenient alternative to conventional heads, enhancing usability. ?Wide application?Suitable for various applications including air conditioners, refrig erants, automobiles, and central air conditioners, enabling testing capabilities. ?Accurate and easy reading?Designed to provide accurate nitrogen testing, this tester is equipped with a large and easy-to-read screen, ensuring precise measurements. ?Compatible with multiple ?Compatible with a range of including R134a, R22, R407C, and R410A, making it suitable for different HVAC systems. Se