Imperial Mechanical Manifold Gauge Set, 4-Valve - 644-C Price For: Each Standards: UL Recognized Item: Mechanical Manifold Gauge Set Hose Length: 60" Features: Diaphragm Type Valves and Pulsation Resistant Gauges Refrigerant Application: R-22, R-404A, R-410A Gauges Low Side Blue: 30" Hg to 500 psi Gauges High Side Red: 0 to 800 psi Vacuum Port Size: 3/8" Number of Valves: 4 Number of Hoses: 4 Country of Origin (subject to change): United States