Therafin - Clear Vinyl Tubing comes in 1/4 OD x 1/8 ID x 5 yards. These control system accessories can be used with a variety of Therafin products, such as Saliva Traps, Sip-n-Puff straws and more. Made in the USA. Size: 1/4 OD X 1/8 ID x 5 yards. Each.