HPS AST-3F-150 6061 T6 Seamless Aluminum Round Straight Tubing, 16 Gauge, 3' Length, 1.5" OD, 0.065" Wall Thickness by HPS AST-3F-150 6061 T6 Seamless Aluminum Round Straight Tubing, 16 Gauge, 3' Length, 1.5" OD, 0.065" Wall Thickness FeaturesMaterial: 6061-T6 aluminumTubing outside diameter: 1.5 inch (38mm)Commonly used in industrial, automotive, marine and aerospace industry; Great for custom fabrication project such as DIY air intake, cooling systems, turbo intercooler pipingLength: 3 Feet16 Gauge. Wall Thickness: 0.065" . .