Amazon.com: MECCANIXITY PVC Rigid Round Pipe 12mm ID 16mm OD 200mm Clear High Transparency for Water Pipe, Aquarium, Fish Tank : Industrial & Scientific
Solid Plastic PVC Tube / Pipe (White) - 12mm x 1.2mm x 1m : Amazon.co.uk: DIY & Tools
Amazon.com: MECCANIXITY PVC Rigid Round Pipe 20mm ID 25mm OD 500mm Transparent High Transparency for Water Pipe, Crafts, Display Racks, Decoration : Industrial & Scientific
Solid Plastic PVC Tube / Pipe (White) - 12mm x 1.2mm x 1m : Amazon.co.uk: DIY & Tools