Charging Hose 2500PSI Burst 500PSI Max w.p. 3ft Hoses 3ft ling each 2500 PSI burst pressure 500 PSI working pressure 1/4" female SAE brass fitting to the gauge block 1/4" female SAE brass fitting to the system ports. 45 degree angle on the service port site for easier access R134A Adapter H/L quick couplers adapters Side fitting for A/C manifold gauge set (R-134A) type High & low sets Pearl nickel plated This professional-grade HVAC charging and testing hose set includes three color-coded hoses with high and low quick adapters, designed for R12, R134A, and R22 refrigerants. The set features durable construction with distinct colors for easy identification during HVAC service and maintenance work. The quick-connect adapters allow for efficient coupling and uncoupling, saving valuable time during operations. These versatile hoses are compatible with multiple refrigerant types commonly used in air conditioning and refrigeration systems. The Qdyzpp hose set is an essential tool for HVAC technicians and professionals, providing reliable performance for charging and testing procedures. The high and low adapters ensure precise connections for accurate pressure readings and refrigerant charging. Perfect for both residential and commercial HVAC applications, this comprehensive set helps streamline maintenance and repair tasks.