Kilner Wide Mouth Preserve Jar 500ml, set 6The Kilner Wide Mouth Preserve Jar is perfect for storing and preserving healthy, home grown foods. Featuring a 2 piece lid system which comprises of a tin disc and screw band ensuring a secure vacuum seal is achieved, keeping the contents fresher for longer. The jar capacity is 0. 5 litres 500ml which is perfect for preserving whole fruits and vegetables as the wider opening allows for easy filling and decanting.