MECCANIXITY PVC Rigid Round Pipe 36mm ID 40mm OD 500mm White High Impact for Water Pipe, Crafts, Decoration, Cable Sleeve: Amazon.com: Industrial & Scientific
uxcell PVC Hose Tube, 19mm(0.74") ID x 24mm(0.94") OD 3 Meter 9.8ft Clear Vinyl Tubing, Plastic Flexible Water Pipe - - Amazon.com
Polycarbonate Tubing, 1 7/8" ID x 2" OD x 1/16" Wall, Clear Color 36" L: Industrial Plastic Tubing: Amazon.com: Industrial & Scientific
Amazon.com: MECCANIXITY PVC Rigid Round Pipe 25.6mm ID 32mm OD 0.2m Clear High Transparency for Water Pipe, Aquarium, Fish Tank : Industrial & Scientific