This citrus juicer is transform your jars into your new favorite citrus juicer. The metal juicer lid is made from sturdy and long-lasting stainless steel, specially designed to bring even more uses to your wide mouth mason jars (jar not included). It is recommended using an 8 or 16 oz. jar for best use. To use, apply some force to snap lid into the rim. The reamer on top is great for lemons, limes and small oranges, and the featured screen will filter out pulp and seeds, leaving you with freshly squeezed juice in the jar. Snap, squeeze, chug. There's nothing fresher.