Small Parts - TPC-063/06-36 -TPC-063/06 Polycarbonate Tubing, 1/4" ID x 3/8" OD x 1/16" Wall, Clear Color 36" L: Industrial Plastic Tubing: Amazon.com: Industrial & Scientific
Amazon.com: uxcell PVC Clear Vinyl Tubing, Plastic Flexible Water Pipe 21mm ID x 23mm OD, 1m