COMPLETE GAUGE SET: This professional automotive AC tool kit includes a 4-way gauge, 4 color-coded hoses, 2 adjustable 1/4'' quick couplers, a 1/2'' to 1/4'' Acme adapter, a 1/4'' to 5/16'' adapter, a 5/16'' to 1/4'' adapter, and a puncture-style can tap; enjoy hassle-free setup and easy operation as you nip your HVAC problems in the bud

HYBRID ANTISHOCK GAUGES: The 2.6" high and low pressure gauges combine the best features of dry and liquid-filled designs, with an oil-filled core resisting wear and shock and a dry dial providing better winter performance; the moisture indicator monitors your coolant’s condition in real time; and calibration screws and superior design provide ±1.6% accuracy

COLOR-CODED HOSES: Blue for low, red for high, yellow for charging, and black for evacuation, these durable PVC hoses have 4 reinforced layers to work with daily pressure up to 800 psi (burst pressure: 4000 psi)

WIDE APPLICATION: This car AC gauge set works with R134a, R22, and R410a refrigerants; ideal for both DIY and professional HVAC maintenance, it allows you to measure your system's pressure, evacuate and refill coolant, and more; a heavy-duty foam-lined carrying case comes included for easy storage and transport between jobs