MECCANIXITY Plastic Pipe Rigid Polycarbonate Round Tube Clear 2.8"(71mm) ID 3"(75mm) OD 17" (425mm) High Impact for Lighting, Models, Water Plumbing - Amazon.com
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Amazon.com: MECCANIXITY PVC Rigid Round Pipe 43mm ID 50mm OD 0.2m Clear High Transparency for Water Pipe, Aquarium, Fish Tank : Industrial & Scientific