Standard: SAE J2064 QC/T664-2005 Working temperature: -40℃-140℃ Appliable Refrigerant: R404a Dimension: 8mm I.D. : 8.2mm O.D. : 16mm Wall Thickness: 4mm Wall Diff Max: 0.4mm Working Pressure Max: 3.5Mpa Burst Pressure Min: 18Mpa Bend Rad Min: 60mm