Best for Ball jars replacement lids, others brand maybe not suitable prefect. Package included: 12 x Wide Mouth Mason jar stainless steel lids with silicone Seals.Pack of 12 wide mouth mason jar lids tops, made of stainless steel,never rust, silicone Seals included, fits most of wide mouth Mason Canning jars (3.4 Inch /85 mm outer diameter). Brushed finish nice surface.Prefect replacement for original lids,if the original split-type not workable for all using,so this full cover lids maybe you needed.Easy to use as a storage.They are ultimate tight and fully protective covers.Watertight and leakproof,they come with food-grade silicone seal to make sure your mason jar is tightly sealed, without leakage. Dishwasher safe.Fits most brand of mason canning jars,such as fit for Ball, Kerr and others. Jars not included.