3 Kilner Standard Preserving Glass Jam Jars & Lids 500ml 5 "wonderful jars" Mrs Harper 16 October 2014 I bought these as I have decided to make a foray into preserving. I made my first batch of spiced apple preserve a few days ago and I was a bit skeptical regarding undoing the twist top and picking it up by just the lid. I need net have worried. It held beautifully. I am now on a foray of preserving and so far have made 3 batches of relishes which are now tucked away for Christmas. I can't wait fir the rest of the kilner things to be delivered. Fabulous quality.