Thin-Walled Aluminum Tubing - 2″ x 4″ x 3/16″ x 1/8"
Amazon.com: Pipes and Accessories 1Pcs 19mm-39mm Inner Diameter Aluminum Tube Alloy Hollow Rod Hard Bolt Pipe Duct Vessel 100mm Length 41mm OD Easy to use and Durable (Specification : 41mm(OD) x39mm(ID)) :