Quantity: Mason jar lids are only suitable for standard clay pots, but not suitable for other types of jars.Material and design: Made of high-quality Tinplate, durable and light, built-in silicone seal to ensure a firm seal; the edge of the Mason jar lid is designed with threads to increase the friction when opening the jar.Features: The metal lid is durable, not easily daed, and can be reused.Good sealing performance: The Tinplate tank lid has good sealing performance, so you don't need to worry about the leakage problem that will pollute the kitchen or other places after sealing.Application: Suitable for sealing mason jars, storing spices, candies, biscuits, fruits, jams, soft drinks, tea or coffee, nails, screws and other small objects.colour: redMaterial: Tinplatesize: 87mm diameterPackage Contents:30*Jar Lidsnote:Please keep the lid clean and dry after use.Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.