B&K 3/8" ODx20' Utility Grade Copper Tube is used for compressed air, icemaker kits, and water supply lines. It is made of copper and has a nominal size of 3/8 inch. The tube is 20 feet long and has an outside diameter of 3/8 inch. It is short and weighs 2 pounds. The UPC is 0685768317982 and the manufacturer part number is RC3820.