K&S Engineering 1110 Round Aluminum Tube, 5/32" OD x 0.014" Wall x 36" Long, 5 Pieces, Made in The USA: Metal Industrial Wall Tubing: Amazon.com: Industrial & Scientific
Tubing, 0.18 in. ID, 1/4 in. OD, Aluminum: Amazon.com: Industrial & Scientific
Meter Star 0.24"(6mm) Aluminum Tubing with compression olive Fittings M10x1 female and Male Length 1 meter/39 inch gas water heater parts - - Amazon.com
Amazon.com : Swim Central HydroTools Hexagonal Aluminum Solar Cover Reel Tube Kit - 5" x 20' : Patio, Lawn & Garden
Amazon.com: ATEYC Aluminum Round Tube, Aluminum Hollow Tubing 5pcs Tube Connecting Shaft for RC Car Boat Model (Color : 6×3mm, Size : Length 100mm) : Industrial & Scientific