- COMPLETE AC TOOL SET: This comprehensive kit features a 4-way gauge, four color-coded hoses, two adjustable 1/4'' quick couplers, a 1/2'' to 1/4'' 29° trap adapter, a 1/4'' to 5/16'' tank adapter, and both angled and straight 5/16'' to 1/4'' adapters, along with a puncture-style can tap. - HYBRID ANTISHOCK GAUGES: Equipped with 2.6" high and low-pressure gauges that merge the benefits of dry and liquid-filled designs. The oil-filled core enhances durability against wear and shock, while the dry dial ensures optimal performance in winter conditions. - BUILT TO LAST: Constructed from solid brass, ABS, and rubber, this AC manifold gauge set is engineered for long-term heavy-duty use. The built-in moisture indicator provides real-time monitoring of your coolant's condition, and calibration screws guarantee a precision accuracy of 1.6%. - COLOR-CODED HOSES: The hoses are clearly marked—blue for low pressure, red for high pressure, yellow for charging, and black for evacuation. These durable PVC hoses feature four layers, allowing them to handle pressures up to 800 psi with a burst pressure of 4000 psi. Practical applications include servicing automotive air conditioning systems, conducting routine maintenance checks, and recharging refrigerants safely and efficiently. This versatile tool set is compatible with various AC systems, making it an essential addition for both professional technicians and DIY enthusiasts.