HPS AST-3F-350 3.5" OD 6061 Aluminum Straight Pipe Tubing 16 Gauge x 3 ftSpecifications MPN: AST 3F 350 UPC: 648044823164 Finish: Mill Finish Material: 6061 Aluminum Color: Mill Finish Outside Diameter Base (B): 3. 5" (89mm) Hose Length Leg Length: 3 Feet Features Material: 6061 T6 aluminum Wall thickness: 2mm Tubing outside diameter: 3 1 2 inch (89mm) Length: 3 feet Commonly used in industrial, automotive, marine and aerospace applications Great for custom fabrication projects such as DIY air intakes, cooling systems,