Mueller Streamline 50 ft. Refrigerator Copper Tubing is crafted from 99% pure copper and comes in convenient 50-foot coils, making it i for refrigeration applications. The tubing is annealed for easy bending, ensuring flexibility during installation. Outer diameter (O.D.) measurements are specifically designed for refrigerator tubing and are available in a variety of sizes stocked in the warehouse, including 1/8", 3/16", 1/4", 5/16", 3/8", 1/2", 5/8", and 3/4" O.D. This product reliable performance and versatility for your refrigeration needs. Model Number: