Amazon.com: QWORK 10FT 3/8" OD 1/4" ID Natural Latex Rubber Tubing Surgical Tube for Home, Hospital, Laboratory : Industrial & Scientific
Amazon.com: Silicone Tube 1/8"(3mm) ID x 3/16"(5mm) OD Clear Flexible Silicone Rubber Tubing Water Air Hose Pipe Transparent (3.3ft / 1m;3 x 5mm) : Industrial & Scientific
Transparent Silicone Rubber Tubing Hose ID from 2mm to 15mm Medical Food Grade | eBay