Rugged metal-cased gauges are non-flutter, with convenient front calibration access ports and easy-to-read refrigerant/pressure scales. Anodized aluminum block bodies advanced triple seal piston Valve system non-flutter metal cases gauges easy-to-read refrigerant/pressure scales all-in-one HVAC gauge with R-410A, R-22, and R-404A scales high-pressure 5 ft/150 cm pro-set hoses with ball Valve fittings on end what's included: pro-set charging hoses. Professional-grade two-valve service manifolds engineered to Test, charge, and recover refrigerant from HVAC/R systems.