Mueller Streamline 50 in. Refrigerator Copper Tubing is crafted from 99% pure copper, ensuring high quality and durability. This tubing is annealed for easy bending, making it i for refrigeration applications. The outer diameter measurements correspond specifically to refrigerator tubing, providing precise sizing for your needs. 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" outer diameters, each coil measures 50 feet in length. This product is designed to meet the demands of refrigeration systems with reliable performance and flexibility.