Amazon.com: Rubber Tubing, Latex Rubber Tube 0.4 inch (9mm) OD 0.2 inch (6mm) ID Highly Elastic and Strong, Speargun Band Slingshot Catapult Surgical Tube Natural Rubber Hose, 1 Meter : Industrial & Scientific
uxcell Latex Tubing 1/8-inch ID 1/4-inch OD 16ft Elastic Rubber Hose Orange: Amazon.com: Industrial & Scientific
Fisherbrand Natural Rubber Latex Tubing on 50ft. (15.2m) Reel:Pumps and | Fisher Scientific