The ac hose with low loss fittings good for R410a and most other refrigerants like R22, R134a, R12, R502.The working pressure of R410 Refrigerant Charging hoses can get 800PSI, burst pressure 4000 PSI.HVAC Hose designed to features with 45 degrees angle on the service port site for easier access, thread size 1/4’’ SAE male and female flare. Meet 1/4" SAE Requirement for Refrigerant Permutation.The ac charging hose made of brass and rubber, premium refrigerant charging hoses last long; easy to operate and install, strong sealing for durability and safety.Features:High quality R410A, R134A refrigerant Charge Hose with strong connectors.59-inch hose Colour coded in black.800PSI working pressure and 4000 PSI burst pressure. For use in adding R41.