Watts SVLK20 Pre-Cut 3/4-Inch Diameter by 5/8-Inch Clear Vinyl Tubing, 20-Foot Length Pre-cut clear vinyl tubing 3/4-Inch OD x 5/8-Inch ID x 20 foot length Polyvinyl chloride is manufactured to exact specifications, which gives it the flexibility of rubber and the clarity of glass It handles a wide variety of chemicals, gas, and liquids, with excellent resistance to acids, alkalis, and many solvents Not for use with ice makers