✅Upgraded Material & Thicker - Our canning lids is made of premium tinplate, and upgraded to be Thicker, which is more durable and does not Deform compared to other products. BPA-free, Safe, Non-toxic and tasteless, Dishwasher safe, Heat resistant, and available for placing in refrigerator. ✅Value Pack - 100Packs regular mouth canning lids (No bands included), adequate quantity for you to use, replace and sharing with your family or friends. 2.7 inches/ 6.8 cm in diameter, which compatible with most regular mouth canning jars, like ball, kerr and more brands. ✅Good Airtightness - Our mason jar lids contain leak-proof and airtight effect, and the canning lid is made of tinplate, with good thermal expansion and contraction. Can help seal your home canned foods airtight and fresh for long time, suitable for keeping food, grains, dressings, drinks fresh. ✅Wide Application - These canning jar lids can bring much convenience to you, suitable for home, kitchen, restaurant, coffee shops, bar indoor cooking, outdoor barbecue and so on. Used to store spices, candy, biscuits, tea, jam, coffee, etc. ✅Safety Buckle Design - Safety buckle on the canning lids, which you could judge if your canning sealing well. Press down on the center of the lid. Solid and concave means a good seal, movement means no seal. Split design with which you can replace the rusty lids. Easy to use and clean, nice tools for kitchen and home.