【Good Airtightness】Equipped with sealing ring, the jar lids makes the mason canning jar lids have good sealing performance, air tight and leak free. Tightly seal mason jar lid help the jars keep food, grains, dressings, drinks fresh, no need to worry about leakage.【Durable Materials】Our mason jar rings are made of tinplate, which can be reused many times, can withstand high and low temperatures, refrigerator, microwave and dishwasher safe. Our canning lids and rings are suitable for most brands of mason bottles.【Wide Application】The mason jar lid is suitable for sealing the mason jars that store tea or coffee, spices, sweets, biscuits, fruits, jams, nails, screws and other small objects. Please check the size before purchasing.【Ample Amount for Your Storage Needs】You will get 24 mouth canning lids and 24 rings, adequate quantity for you to use, replace and sharing with your family or friends. the screw thread on the ring can help open the bottle easily.【Worry-Free Guarantee】If you are not satisfied with the canning lids and rings, please contact us within 30 days, you will get a hassle-free full refund. Any questions or comments you have, we’d be happy to hear from you.Note: Jars not included. On Dec-31-20 at 02:25:38 PST, seller added the following information: