Proflow Aluminium Tubing Air Intake, Intercooler 3.50in. 60 Degree Elbow - PFEAP110-350Part Number: PFEAP110 350 Proflows aluminium tubing brings your engine compartment to life! These AL6061 aluminium mandrel bent u bends, elbows, and straights help you to fabricate your own custom, lightweight intercooler plumbing and air intake assemblies. We offer aluminium tubing in a variety of lengths and OD sizesand theyre easy to weld. Create a show under your hood with the selection of beautiful aluminium tubing at an affordable price.