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MECCANIXITY Plastic Pipe Rigid Polycarbonate Round Tube Clear 2.8"(71mm) ID 3"(75mm) OD 14" (350mm) High Impact for Lighting, Models, Water Plumbing - Amazon.com
uxcell PVC Heat Shrink Tube 180mm Flat Width Wrap for Dual Layer 1 Meter Clear: Amazon.com: Industrial & Scientific