Fits 3.38-inch wide mouth Mason jars with 304 stainless steel lid material. BPA free, will not rust, no adhesives or glues.Mason jar flavor bottle lids lock tightly to keep them fresh. So you can store unused smoothies, juices and salad dressings and enjoy them later. The airtight design preserves flavor and insulates against refrigerator odorsWide Mouth Mason Jar Pour Spout Lid: our mason jar lid is suitable for wide mouth mason jars, you can use it to turn your mason jar into a versatile pitcher that can be applied to pour and store a variety of liquids and foods, suitable for milk, iced tea, iced coffee, cereal, beverages and juice sealed storageThe products are durable and easy to care for. They are dishwasher safe and made of 304 stainless steel. So you know they are 100% safe for you and your familyApplicable scene. These spout caps are a must-have tool for home, kitchen, restaurant, coffee shop, bar indoor cooking, outdoor grilling and more, saving you time and effort. Fits 3.38-inch wide mouth Mason jars with 304 stainless steel lid material. BPA free, will not rust, no adhesives or glues.