Reliable to use: Our canning jar rings contain nice leak-proof and airtight effect, using with canning lids is good for sealing your food and preventing leakage, maintain your food in fresh and clean condition for a long time. Specification: Size: regular mouth Color: silver Material: tinplate Packing List: 20 x sets of regular mouth jar lids & band. 【Quantity & Size】Includes 20mason jar lids and 20matching bands, the two parts can be separated or put together; 40 pieces sufficient enough for your daily needs and replacements. Inner diameter of the band is 5.6cm/2.21inches, outer diameter of the band is 7cm/2.75inches; and the diameter of lid is 6.8cm/2.7inches. Please make sure the size before purchase. 【Split-Type Lids】The band can be applied in combination with silicone fermenting lids and stainless steel sprouting lids, the screw thread on the bottle mouth can increase the friction force of hands, which facilitates the opening of the bottle. suitable for regular mouth mason jars(2.76inches). 【Good Sealing】Our sealing rings have good sealing performance, air tight and leak free, suitable for keeping food, grains, dressings, drinks fresh and clean condition for a long time. 【Quality Material】 The jar lids and bands are made of tinplate and the lid covers a ring that made of PVC; rust proof and durable, can be applied for many times use; Note:please dry the the mason jar lids after cleaning. 【Wide Application】Suitable for sealing the mason canning jars that stored spices, sweets, biscuits, fruits, jams, soft drinks, tea or coffee, nails, screws and other small objects, please make sure the size before purchase.