Amazon.com: Extruded Acrylic Rigid Round Tube, Clear, 5-3/4" ID x 6" OD x 12" L : Industrial & Scientific
Clear Cast Acrylic Tubes [Plastic Tubes]
Amazon.com: OLYCRAFT 12x1.6 Inch Acrylic Round Tube Clear Rigid Acrylic Pipe Clear Round Tube Hollow Round Bar Rod for DIY Crafts Lamps Aquarium Fish Tank Architectural Model Making : Industrial & Scientific
1/2" ID X 3/4" OD Clear Extruded Acrylic Tube - 6' Long
Clear Extruded Acrylic Tubing 1-1/2" to 6" OD | U.S. Plastic Corp.