Fowlers Vacola Clips size 3, one box of 12 clips

FOWLERS VACOLA SIZE 3 CLIPS ONE DOZEN

There are 12 clips in the box. These clips  are used on Bottle size number 14, 20 and 27, bottles 14 and 20 are available new but 27s are only available second hand now and you can always find some on ebay or gumtree

They are used in conjunction with size 3 rings and size 3 lids along with the fowlers vacola preserving method

Looked after, ie washed and dried properly (not in a dishwasher) these should last for years, and you really only need as many clips as you are likely to preserve bottles in  a day, as when the lids are cold you can take the clips off and use them again. Most people find 24 clips are enough. You only use one for each bottle, and its a myth you need two per bottle or they need to be left  on permanently