The Robinair 38172A 1/4" yellow standard hose with Quick Seal fittings neoprene-coated for flexibility and wear resistance, and feature a 500 psi working pressure; 2500 psi burst pressure. Robinair premium refrigerant charging hoses are built for long life and dependability. A strong, six-sided crimp provides a reliable connection between the hose and barb, even at maximum pressure. The coupler nuts are deeply knurled for quick finger-tightening. This hose is equipped with a 45° bend fitting on one end, for convenient access to the system.