Manifold Gauges Charging hoses:36",60",72" Press Scale:Psi,Bar,kg/m2 Suited for R12/R22/R502/R134a/R404a/R407C/R410a.Forged brass body valve used sliding pistons with dual o-ring.Two compound pressure gauge colored scales are easy to read.Color-coded valve handles are easy operation,even to oily fingers.Protective boots resisit to shock,vibration and pulsation.Usually include 3-pcs colorcoded ...