Easy Clean Stainless Steel Lids with Free Silicone Valve: Made from stainless steel, these fermentation lids are durable, odor-resistant, and easy to clean by hand or in the dishwasher. Each lid includes a free silicone fermentation valve, providing safe and beginner-friendly gas release without extra tools. Easy Date Tracking for Every Batch: Quickly twist the built-in dial to mark the start date of your ferment. Ideal for keeping multiple jars organized without sticky notes or confusion. Works well with any fermentation jar, including standard wide mouth containers. Automatic Gas Release – No Extra Setup Needed: One-way valve allows gas to escape naturally while preventing outside air from entering—no need for burping or additional airlocks. These fermenting lids are ready to use right out of the box, making them perfect for beginners and a practical addition to any fermenting kit. Leak-Proof Natural Seal for Busy Kitchens: Featuring a thickened rim, each lid fits securely on wide mouth jars and maintains a tight seal even when moved or tilted. A great upgrade for small-batch home fermentation projects, from kombucha to pickles. Fits 86mm Wide Mouth Jars in All Common Sizes: Designed for 86mm openings, these lids fit standard 16oz, 24oz, 32oz, and 64oz wide mouth jars. Whether you're making sauerkraut or garlic vinegar, this lid ensures a secure fit every time. Great for Batch Fermenting: From sauerkraut to kimchi, these fermentation lids handle both small and large batches with ease. Pair with your favorite fermentation weights or canning supplies for a simple, clean, and rewarding DIY experience. Color: Silver Material: Stainless Steel Package Contents: 4 x Fermentation Lids Only the above package content is included; other products are not included. Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm.