Dual R134A and R1234YF Evacuation and charging combo kit: The kit includes the 90066-B-SF vacuum pump with spark free components for use with all refrigerants including R1234YF. 66661-AYF Dual R134A and R1234YF brass manifold gauge set with 60 hoses, 134A set of standard couplers, 1234YF set of standard couplers, two 1234YF conversion fittings and YF tank adapter. Dual R134A and R1234YF Oil/Dye injector, use the couplers supplied with the gauge set to add dye/oil. Includes free 52219 IR Thermometer that ranges from -31 to 689 F 8 to 1 ratio with laser