Features: 62mm aluminum foil coffee lids deliver exceptional freshness preservation with 0.01% oxygen permeability, effectively blocking air, moisture, and light for long lasting coffee aromas. Featuring self adhesive design and food grade aluminum material, these coffee machine parts create airtight seal without tool for effortless daily use. Ideal for coffee enthusiasts, commercial kitchens, and specialty roasters requiring professional grade coffee accessory storage solution. Perfect for sealing opened coffee packages in home pantries, cafés counters, or during transportation to maintain flavor integrity. Outperforms plastic lids with superior oxidation resistance and performances, preserving coffee's original taste profile through multiple storage cycles. Specifications: Material: Aluminum Foil Color: Silver Diameter: Approx. 2.44inch(62mm) Package Includes: 100x Aluminum Seals note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.