RAD Standard Peep Sights Latex Tubing .063 ID 3Ft - Black — WoodsArcheryRange.com/TheCrossbowStore.com
Cello Brained!: Cellophant and surgical tubing for my cello bow
Tube Size is Deceptive ! | Slingshots Forum
Snapklik.com : Frienda 100 Ft Latex Rubber Tubing 3/8 Inch OD 1/4 Inch ID Multicolor Natural Latex Tube Surgical Tubing Sling Rubber Band Fitness Hose, 1 Continuous Piece