The Kilner Wide Mouth Sealing Disc replacements are designed to fit onto Kilner Wide Mouth Jars. The current sizes available are 0.2, 0.35 and 0.5 litre capacities.|They are to be used in conjunction with the Kilner Wide Mouth Screw Bands to create a perfect vacuum seal which will become airtight and leak proof, ensuring the contents are kept fresher for longer.|Made from quality tin metal, perfect for all preserving requirements. Hand wash and dry straight away.|Hand wash and dry straight away. Measuring 9.5cm in diameter.|Set contains:|12 x Sealing Discs