Flexible PU Hose, Diameter 160 mm - 200 mm, Wall Thickness 0.93 mm, for Exhaust Fan, 1 metre Long, Diameter (200mm) - Amazon.com
Amazon.com: 25 Feet - 3/16" ID 7/16" OD Clear Vinyl Tubing Food Grade Multipurpose Tube for Beer Line, Kegerator, Wine Making, Airline Tubing for Aquarium, Air Water Hose, Fuel Line by Proper
Amazon.com: PVC colorless vinyl tube, flexible water pipe, 5mm ID x 7mm OD, 10m long : Everything Else
DAVCO 3/4" ID × 25 ft Clear Braided Plastic Vinyl Tubing Flexible High Pressure Reinforced PVC Hose: Amazon.com: Industrial & Scientific
adequa M-200 HEMBRA-HEMBRA Coupling for Tube of Pressure, 200 mm - Amazon .com