Weck canning jars are made with thick glass to withstand boiling, sterilizing and processing over and over again. Glass lids preclude issues with rusting, and the tab on the replaceable rubber ring, when facing downwards, indicates clearly that the seal on the jar is intact.- These jars are suitable for water bath, and pressure canning. With the added bonus of being able to freeze and bake! – The most versatile and beautiful preserving jar available today.- Weck reusable Glass Jars are of the highest quality and contain NO BPA!- All jars have wide openings for tidy, easy filling.- Capacity: 220ml- Includes glass lid, natural rubber seal and 2 stainless steel clips.- Dimensions: 8cm High with 6.5cm W