- Quantity and size - Each set includes 30 stainless steel mason jar lids. - Diameter: 70 mm / 2.8 inches. Height: 16 mm / 0.6 inches. - Designed for standard-mouth mason jars only; not compatible with other wide-mouth bottles. - Material and build - Made from durable, lightweight stainless steel for long-lasting use. - Built-in silicone seal provides a tight, reliable closure. - Threaded rim improves grip when opening jars. - Performance and safety - Reusable metal lids resist damage and wear better than disposable or thin plastic covers. - No BPA or other plasticizers in the construction—safe for food storage. - Strong sealing performance reduces the risk of leaks and prevents contamination of kitchen surfaces and stored contents. - Why you need these lids - Replace worn or damaged lids with a durable, reusable option that restores airtight sealing. - Avoid messy leaks and spills in the fridge, pantry, or during transport. - Upgrade from plastic covers to a safer metal solution without BPA. - Practical use scenarios - Home canning and preserves: secure jams, jellies, and pickles for short-term storage and everyday use. - Dry goods and pantry storage: keep spices, coffee, nuts, and grains fresh and protected from moisture. - Gifts and crafts: finish DIY candles, sauces, or gift jars with a sturdy, attractive lid. - What sets these lids apart - Stainless steel construction for durability and repeat use. - Silicone sealing ring for effective leak resistance. - Threaded edge for easier opening while maintaining a secure fit. Compatible only with standard-mouth mason jars. Check your jar diameter (70 mm / 2.8 in) before purchase to ensure a proper fit.