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Amazon.com: uxcell Clear Rigid Acrylic Pipe 96mm ID x 100mm(4/inch) OD x 305mm(12") Round Tube Tubing : Industrial & Scientific
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Polycarbonate Tubing, 1" ID x 1 1/4" OD x 1/8" Wall, Clear Color 36" L (Pack of 1): Industrial Plastic Tubing: Amazon.com: Industrial & Scientific
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MECCANIXITY Plastic Pipe Rigid Polycarbonate Round Tube Clear 3.4"(86mm) ID 3.5"(90mm) OD 9.6" (245mm) High Impact for Lighting, Models, Water Plumbing - Amazon.com
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Amazon.com: Intex, 43227-2120 Pack of 3: 30" Transparent Tubes, Colors May Vary, Multi : Toys & Games
Amazon.com: 3/4 Inch Diameter Clear PVC Schedule 40 Pipe [Pipe ID 0.804 inch, OD 1.050 inch] (Bluish tint), Choose Your Length (5 inches to 8 Feet) (Selected Length: 6 Feet) : Industrial & Scientific
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