The Charging Hose suitable for R22 R134a R404a R12 Gas. If it is wrong use it in other Gas ( R410a, R32 ). AT YOUR OWN RISK !> Heavy Duty Brass Made Hose Connections.> Designed to Meet 1/4 inch SAE Requirement for Refrigerant Permutation.> Working Pressure: 500 PSI, Burst Pressure: 3000PSI.> 1-Red: 1/4 inch Male SAE on one end and 1/4 inch Female SAE with valve core depressor on other end; 1-Blue: 1/4 inch Male SAE on one end and 1/4 inch Female SAE with valve core depressor on other end; 1-Yellow: 1/4 inch Male SAE on one end and 1/4 inch Female SAE with valve core depressor on other end.> colour:Blue + red + yellow> Material:Brass + plastic + metal> Length:55 inch ( 140cm )