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Amazon.com: POWERTEC 70272-P4 Clear PVC Pipe 4" x 36" Long, 4PK, Rigid Plastic Tubing for Dust Collection Hose & Fittings : Tools & Home Improvement
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Amazon.com: Polycarbonate Rigid Round Tube, Clear, 3-3/4" ID x 4" OD x 12" L : Industrial & Scientific
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