From the bed of your pickup truck to the cargo hold of an airliner, your rods can take a real beating when you travel unless you protect them with these rugged travel tubes. Constructed of heavy-duty impact-resistant blow-molded plastic, they're fully airline approved and tough enough to take on all the abuse you can put a rod tube through for many years to come. The three-section tube is fully adjustable from 47 -88 to hold a wide range of rod sizes. Inside diameter: 4-1/2 . Cancer and Reproductive Harm- www.P65Warnings.ca.gov.