Packing list: 300 jar lids. Dimensions: 2.75 inches/7 cm in diameter. The lid of the jar can be compatible with the regular mouth of most 7 cm jars, but not compatible with other wide mouth jars or bottles. [Good tightness]: No leakage, tightly sealed. The lid of the jar is equipped with a silicone ring. The canned lid is suitable for keeping food, grains, seasonings, and beverages fresh. You don't need to worry about the leakage of sealing material contaminating the kitchen or other places. The lid can be used to store leftovers, fresh sauces or juices, dry goods storage, spices and other small items. In addition, you can use a marker to mark food-related information on the lid of the jar, or write the date on the lid, which can help you record the time of food production and purchase. [Material]The Regular Jar Lids are made of tinplate, and there is a layer of silicone ring inside and can be reused many times.canning lids are to high and low temperatures, so canning lids are suitable for refrigerators, dishwashers and microwave ovens, you can use Canning Lids to replace your rusted metal lids. [Anti-rust effect]: Conventional jar lids are rust-proof and -. You can use canned lids to replace rusty metal lids. Can be placed in the refrigerator. size:Standard mouth 70mm Material:Tinplate colour:Silver Package Contents: 300 x Jar Split-Type Lids (Not Include Band) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.