Easy Clean Stainless Steel Lids with 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 silicone fermentation valve, offering safe and beginner-friendly gas release without extra tools. Easy Date Tracking for Every Batch: Twist the built-in dial to mark the start date of your ferment. Perfect for keeping multiple jars organized. Automatic Gas Release – No Extra Setup Needed: One-way valve lets gas escape naturally while blocking outside air—no need for burping or airlocks. These fermenting lids are ready to use right out of the box, making them ideal for beginners and a practical addition to any fermenting kit. Leak-Proof Natural Seal for Busy Kitchens: With a thickened rim, each lid fits snugly on wide-mouth jars and stays sealed even if moved or tilted. A great upgrade for small-batch home 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. Great for Batch Fermenting: From sauerkraut to vinegar-based ferments, these lids handle small and large batches with ease. Pair with your favorite fermentation weights or canning kit for a simple, clean, and rewarding DIY experience. Color: Silver Material: Stainless Steel Package Contents: 4 × Fermentation Lids Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement tolerance: ±1–3 cm.