Convenient package contains everything needed to properly charge an A/C system quickly and accurately. Kit includes: 2 cans RED TEK A/C Refrigerant, 1 can RED TEK LeakStop12, Oil Analyzer, 1 Installation Hose with Gauge, Installation Instructions, (Manufacturer reserves right to package kit in another manner should packaging materials run out of stock.) RED TEK A/C Refrigerant can be used in all R134a applications, including pre-1994 automobiles that have complied with the USEPA Snap Law. Operation:...