Hard Low-Pressure Semi-Clear White Polypropylene Plastic Tubing for Air and Water Applications - Inner Diameter 5/8" - Outer Diameter 3/4" - 50 ft - Walmart.com
Protective hose conducted / Made of plastic: Corrugated polypropylene protective flexible tubing - COR-PP (BLACK) | INDUMAT
Introduction of Polypropylene (PP-R) Pipes for Hot & Cold Water
Polypropylene 2 ml Disruption Tubes
PP Barb 1/2" Y Tee Tube Fitting for 1/2 ID Hose Polypropylene Plastic Pipe Connectors Boat Water Air Aquarium O2 Fuel Pack of 2: Amazon.com: Industrial & Scientific