Amazon.com: 26 FT Rubber Tubing, Pure Latex Amber Tubing Natural Rubber Tube Highly Elastic and Strong Rubber Band for Slingshot Catapult, Outdoor 3/8 inch (9 mm) OD 1/4 inch (6 mm) ID : Industrial & Scientific
Amazon.com: StonyLab Rubber Tubing, Pure Latex Amber Tubing Natural Rubber Tube 3/8 inch (9 mm) OD 1/4 inch (6 mm) ID Highly Elastic and Strong, 3 Meter : Industrial & Scientific
Amazon.com: uxcell Latex Tubing 1/4-inch ID 3/8-inch OD 10ft Elastic Rubber Hose Red : Industrial & Scientific
YOUEON 3 Pack Natural Latex Rubber Tubing Tube 1/4" (6mm) ID x 3/8" (9mm) OD, 49.2 Ft Speargun Band for Slingshot Catapult, Surgical Tube, Rubber Tubing, Elastic Parts Rocket Outdoor Hunting: Amazon.com:
Everbilt 3/8 in. O.D. x 1/4 in. I.D. x 10 ft. Latex Hose 769355 - The Home Depot
Natural Latex Rubber Tubing 1.8mm ID 4.2mm OD 25ft Red Highly Elastic - Overstock - 35708831
Natural Latex Rubber Tubing 1.7mm ID 4.5mm OD 10ft Red Highly Elastic - Overstock - 35709165
UDP 1/4 in. I.D. x 3/8 in. O.D. x 10 ft. Natural Latex Tubing T64006001 - The Home Depot