1)R410A HI-Performance Charging Hoses-HCH800-R410a 2)pass CE,CCC 3)Rubber hose-refrigerant 4)high quality ,competitive price Charging Hose 1.With adjustable valve core depressor, easy to open the valve.2.The nut channels prevent refrigerant spray back..3.Hose cover pin-pricked to resist bubbling and bursting.4.Meat SAE-J2196 for strength, pressure and refrigerant permeation..5.Selection-longer ...