XPOWER 8DH25 PVC Extra Flexible Ducting Hose, -20 to 180 degrees F Temperature Range, 25' Length, 8" ID: Amazon.com: Industrial & Scientific
Amazon.com: Firm Bendable Color Coded Opaque Green PVC Tubing for Air and Water Applications - Inner Diameter 3/4" - Outer Diameter 1" - 100 ft : Industrial & Scientific
uxcell PVC Heat Shrink Tube 180mm Flat Width Wrap for Dual Layer 18650 1 Meter Clear: Amazon.com: Industrial & Scientific