You will get 50 pieces regular canning jar lids and 50 pieces regular canning jar bands, adequate quantity for you to use, replace and sharing with your family or friends. The jar lid and band are made of tinplate and the sealing ring is made of PVC, rust proof and durable, can withstand high and low temperature, so it can be served in refrigerators, dishwasher and microwave ovens; Size: the inner diameter of the metal ring is 5.6 cm/ 2.2 inches, its outer diameter is 2.8 inches, and the diameter of lid is 6.8 cm/ 2.7 inches, suitable size for regular mouth canning jars. The sealing ring increases the tightness of the canning jar, air tight and leak free, tightly seal ensure it's suitable for keeping food, grains, dressings, drinks fresh, Practical Split Design: Split design makes it fit more lids, the band can be applied in combination with silicone fermenting lids and sprouting lids, the screw which threads on the bottle mouth increases the friction force of hands, which facilitates the opening of the bottle.