Suited for R12/R22/R502/R134a/R404a/R407C/R410a. Anodized large block aluminum body. Large colored gauge are easy to read and re-calibrate. Optical sight glass aids refrigerant inspection. Protective boots resisit to shock,vibration and pulsation. Usually include 3-pcs colorcoded standard charging hose. Every manifold is individually tested for reliability before packing.