SUPERIOR SEAL: Each canning lids features a food-grade silicone sealing ring that ensures an airtight, leak-proof seal, perfect for preserving the freshness and flavor of your homemade jams, jellies, pickles, and more.DURABLE and EASY to USE: Made from premium tinplate steel, not easy to rust and bend. The smooth edges and uniform design make these lids easy to handle and apply. The raised center allows for a quick and easy check of the seal status, providing peace of mind for all your canning needs, ensuring a long-lasting performance.BULK VALUE PACK: Sold in a convenient set of 100, these ball jar lids offer excellent value, meets the needs of various usage scenarios, keep your pantry stocked, saves you the time and money needed for each purchase.UNIVERSAL FIT: Designed to fit all standard mason jars, these lids are versatile and perfect for any canning project. Whether you're using Ball, or any other brand of mason jars, these lids will fit securely.DIY YOUR LIDS: These mason jar lids is designed with a writable surface, allowing you to note the date and food information of canning directly on the lid. This practical feature ensures you always know the freshness and storage duration of your preserved goods, making it easier to manage your pantry and reduce waste. Product description