Watts Svig20 Pre-Cut 1/2-Inch Diameter By 3/8-Inch Clear Vinyl Tubing, 20-Foot LengthPre-cut clear vinyl tubing1/2-Inch OD x 3/8-Inch ID x 20 foot lengthPolyvinyl chloride is manufactured to exact specifications, which gives it the flexibility of rubber and the clarity of glassIt handles a wide variety of chemicals, gas, and liquids, with excellent resistance to acids, alkalis, and many solventsNot for use with ice makers