Cork Lids / Stoppers for Mason, Ball, Canning Jars (4 Pack, Wide Mouth) 4 cork lids for wide mouth Mason jars per order. Available for regular mouth (2 3/8" internal diameter) and wide mouth (3" internal diameter) Mason jars. Our cork stoppers are adorable and make it easy to access the contents of your jars! Perfect for any use  food storage, crafts, or home decor. Cork is a natural material so colors vary slightly. Food safe. Produced in the same way as composite wine corks. Your entire Mason Jar Lifestyle order ships for a flat $3, or free over $35. Check out our other products! Ships within 1 day via USPS First Class from Denver, CO.