38mm Poly Seal Screw Caps (fits most 1/2 & 1 gallon jugs) Description These 38 mm poly seal screw caps fit our 1/2 and 1 gallon jugs that we carry. The poly cap will not rust over time. Features: 38mm Poly Screw Cap 12 Count Reusable Product Details: Product Dimensions: 9 x 3.2 x 1.2 inches Item Weight: 3.52 ounces Manufacturer: Home Brew Ohio Country of Origin: USA Item model number: 83-2HJ4-5C57 Is Discontinued By Manufacturer: No Date First Available: November 8, 2011