Amazon.com: Clear Vinyl Tubing, 1/4" ID x 3/8" OD x 250' : Industrial & Scientific
Zantlea Pipe and Tube Cutter, Ratcheting Hose Cutter One-hand Fast Pipe Cutting Tool with Ratchet Drive for Cutting Less Than 1-1/4" O.D. PEX, PVC, and PPR Pipe - Amazon.com
Amazon.com: PVC hose, vinyl tube, flexible water pipe, 25mm (1 inch) inner diameter X 30mm outer diameter, 1m long : Everything Else
Amazon.com: 20 Pcs Rigid Industrial Plastic Tubing, Rigid PETG Tube Including 10 Pcs 1 Inch/ 25 mm OD and 10 Pcs 1/2 Inch/ 12 mm OD x 1 mm Wall Thickness Plastic
Amazon.com: MECCANIXITY PVC Rigid Round Pipe 55mm ID 63mm OD 300mm Clear High Transparency for Water Pipe, Aquarium, Fish Tank : Industrial & Scientific
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Amazon.com: Polycarbonate Rigid Round Tube, Clear, 1" ID x 1-1/8" OD x 12" L (Pack of 4) : Industrial & Scientific