1/2" ID x 5/8" OD Clear Vinyl Transfer Tubing - Food GradeThis 1 2" ID Vinyl Transfer Tubing is the professional choice for high volume liquid racking and transfers. The large 1 2 inch internal diameter allows for rapid flow rates from fermenters to bottling buckets or kegs, significantly reducing the time your beverage is exposed to air. Made from clear, food grade PVC, it is BPA free and allows for visual inspection of flow and cleanliness. It is highly flexible and resistant to common brewery sanitizers.