1. Strong Compatibility This AC conductor set is ideal for various refrigerants, including R134A, R12, R22, and R502, suitable for both automotive and household air conditioning systems. 2. Heavy Duty for Performance Crafted from quality brass, aluminum, and PVC materials, this AC gauge kit is built for rugged performance, capable of withstanding demanding working conditions. Its reliable seal ensures accurate readings and safe operation for HVAC or automotive tasks. 3. Wide Application This comprehensive AC meter is not limited to automotive systems—it's also for HVAC maintenance in homes and refrigerators. Whether diagnosing issues or charging refrigerants, this kit provides the essential tools for efficient maintenance across various cooling systems. 4. Complete Kit Contents The kit includes everything needed for effective refrigerant handling: a 3way AC meter, three durable hoses, two adjustable quick connectors, a valve core tool, a bottle opener, a hanging hook, a replacement kit, and an easytofollow instruction manual.