Straw Hole Tumbler Lids for Regular Mouth Mason, Ball, Canning Jars (10 Pack, Polka Dot) Includes 10 polka dot straw hole tumbler lids for regular mouth (2 3/8" internal diameter) Mason jars - random colors. These straw hole lids are made of tin plated steel with a plastisol liner. The straw hole is 10mm. They do not have straw grommets. They are perfect for everyday use or for birthday parties, baby showers, weddings, and any other social gathering! You can choose to use them with any size Mason jar that has a regular mouth. Half pint jars are great for kids or for cocktails, and pint or quart jars are perfect for water, soda, juice, iced tea, or whatever you feel like sipping on. They pair perfectly with our stainless steel straws, glass straws, or paper straws! Your entire Mason Jar Lifestyle order ships for a flat $3, or free over $35. Check out our straws and other products! Usually ships in 1 day via USPS First Class from Denver, CO.