Clear Food and Beverage Grade Phthalate Free PVC Tubing. 1/4" - 60 PSI Rating | 1/4" ID | 1/2" OD 3/8" - 45 PSI Rating | 3/8" ID | 1/2" OD 1/2" - 30 PSI Rating | 1/2" ID | 5/8" OD 3/4" - 35 PSI Rating | 3/4" ID | 1" OD