Yellow Latex Tube Surgical Slingshot Catapult Band High Elastic Rubber Tube | eBay
Amazon.com: JoyTube Natural Latex Rubber Tubing, 8mm(5/16") ID x 12mm(1/2") OD 3 Meter Surgical Tubing for Home Hospital Laboratory Speargun Band Slingshot Catapult Hose Tube : Industrial & Scientific