Suitable size to use: these canning jar replacement metal rings measure approx. 70 mm/ 2.76 inch in outer diameter and 56 mm/ 2.21 inch in inner diameter, these round bottle caps measure approx. 68 mm/ 2.681 inch in diameter, suitable size to fit your regular mouth canning jars and bottles Sufficient quantity to use: you will receive 24 pieces screw jar bands and 24 pieces mason canning jar lids, enough quantity to satisfy your various use and replacements, can help seal your canned foods airtight and fresh for long time Durable and reliable: these metal bands rings and mason canning jar lids are made of tinplate material, durable and reliable to use, can withstand high and low temperature, smooth, not easy to crack, flake or corrode, safe for refrigerators, microwave ovens and dishwasher, good material that can accompany you long time; The metal jar bands and lids are recommended to dry with a cloth after washing to prevent rusting for good Widely applicable: these canning jar replacement rings and mason canning jar lids are compatible with most mason jars, suitable for most bottle, jar to store fruits, cookies, candies, salad, milk, smoothies, tea, coffee, screws or other small objects, come with good sealing, safe to use Airtight sealing performance: our sealing rings and lids can make any plastic or metal lid leak-proof and air-tight, each jar sealing ring and lid features small grooves design for tightly and securely fitting, not easy to slip or move around, good to protect the food in your jars safe and fresh