OPTIMIZED FOR WIDER APPLICATIONS, THIS MANIFOLD GAUGE FEATURES 4 VALVES AND IS SUITABLE FOR 4 TYPES OF REFRIGERANTS: R-410A, R-22, R-134A, AND R-404A OR R-410A FOR N4A4 & N4A4H MODELS, AND R-22, R-32, R-454B FOR N4A4B MODEL (FROM OUTER RING TO INNER). INCORPORATING THE LATEST ERGONOMIC RESEARCH AND ADVANCED DESIGN, IT’S EASY TO HANDLE AND DELIVERS HIGH PRECISION WITH CLASS 1.0 ACCURACY. THE INTEGRATED, IMPACT-RESISTANT ALUMINUM BODY DESIGN PROVIDES OUTSTANDING PROTECTION. WITH 4 BALL VALVE HANDLES AND EASY FOLDING HOOK DESIGN, THE GAUGE IS EASY TO CARRY.