This pack includes 12 CDL white plastic caps in the 53-400 size, designed to fit CDL jugs of 1 L, 2 L, and 4 L. Made from durable, food-grade plastic, they provide a secure, airtight seal to preserve the quality and freshness of maple syrup. Sold only in packs of 12, these caps offer maple syrup producers a practical and reliable closure solution.