Manifold Gauge, Number of Valves 2, R-22, R-404A, R-410A, Number of Hoses 3, 60 in, 0 to 800 psi, 30 in Hg to 500 psi, +/-3-2-3 Percent, 1/4 in, Brass, Free Floating Dual O-Ring Sealing System for Faster Evacuation/Charging, Color Coded Refrigerant...