The Kilner Regular Mouth Mason Jar 6-pack is ideal for canning whole fruits and vegetables, storing dry food, soups, jams, sauces and more. These 1-litre, glass, mason jars feature wide screw-top lids for easy filling access. The 2-piece metal lids create a secure vacuum seal for preserving fresh flavours. Dedicated to sustainability, the 100% recyclable Kilner mason jars are the safest option for storing your homemade goods.