Proflows Aluminum tubing brings your engine compartment to life! Our T-6061 aluminum mandrel-bent U-bends, elbows, straights and evan Donuts to help you to fabricate your own custom, lightweight intercooler plumbing and air intake assemblies. Proflow offers their aluminum tubing in a variety of lengths and O.D. sizes—and they're easy to weld. Create a show under your hood with the selection of beautiful aluminum tubing from Proflow at an Aforadable Price.