Charging Hoses Set AC R410A 1/4" with Ball Valves Fittings Designed for standard 1/4" SAE refrigerant charging hoses The hoses rated at 4000 psi burst / 800 psi Max. working pressure. Valves are color coded on knobs 1-Red, 1-Blue & 1-Yellow Brass body with 4" charging hose Please read the rest of the product description before purchasing to ensure proper fit.