High-Pressure Resistance: The hoses are designed to withstand high pressures, with a working pressure of 500 PSI and a burst pressure of 2500 PSI, ensuring safe and efficient operation. Convenient Access: The standard 1/4 inch female flare fittings feature a valve core depressor and a 45° bend on one end, providing convenient access to the system. Easy Installation & Operation: The refrigerant charging hose kit is easy to install and operate, featuring strong sealing for enhanced durability and safety. It's an essential tool for HVAC and car air conditioning maintenance. Wide Compatibility: The hose with compact ball valve kit is designed to meet the 1/4" SAE requirement for refrigerant service, making them compatible with most refrigerants like R12, R22, and R502. Package Content: 3 pieces 150cm/59.06inch hoses coded in red, blue and yellow, each equipped with a compact ball valve. The coupler nuts are deeply knurled for quick finger-tightening. Item Name: A/C Charging Hose Set Main Material: Metal, Rubber Applicable Refrigerant: R12, R22, R502 Thread Size: 1/4 inch Overall Length: 150cm/59.06inch Refrigerant Charging Hoses: 500 PSI working pressure, 2500 PSI burst pressure Color: Multicolor Package Size: 33*21.5*5cm/12.99*8.46*1.97inch Package Weight: 733g/1.62lb Package List: 3 x AC Charging Hose, 3 x Ball Valve