Brass Material: The flow control valve is made of high-quality brass. Using a thickened body, the brass hose joint has high strength and durability, high quality, and long service life. Equipped with a removable copper adapter, easy to clean. Easy Installation: Use the quick connect adapter for the R134A service port, the 1/4 inch Sae socket, and connect the vehicle to the 1/4 inch Sae service hose. Connect it to the end of the charging hose and minimize coolant loss during maintenance. Strong Practicality: The kit includes high-pressure and low-pressure quick connectors. The blue quick connector is a low-voltage adapter, and the red quick connector is a high-voltage adapter. High-quality design, easy to rotate from the top. No matter how the safety valve is placed, the operation can be easily changed. Product Advantages: Suitable for air conditioning systems. The tool no longer burns the refrigerant on the hand. Regardless of the position of the safety valve, the cooling and charging adapter can be easily replaced and used. The cooling and charging adapters are made of high-quality materials, and the tightness can be adjusted to ensure no leaks. Excellent design: reliable seal. The adapter has been safely and reliably sealed before leaving the factory. The adjustable coupler ensures universal compatibility for all models. The movable die can accurately control the high and low pressure needle valve of the air conditioner. Specification Details: Name: 2pcs/set 1/4 inch AC R134A Socket Adapter Size: 15 x 12 x 8 mm 1/4 inch Material: copper Application: AC Charging Valve R134A High and Low Pressure Connection Adapter 1/4 inch Refrigerant Pressure Gauge Hose Fitting. Adjustable Quick Connector, Fluorine Air Conditioning and Cooling Tool for 134a. Package Contents: 1 x High Pressure Quick Connector, 1 x Low Pressure Quick Connector