The Bottle Opener has been especially designed to open preserves by breaking the vacuum seal without damaging the preserving lid. 

To Use: Hold the bottle you wish to open firmly down on a table, insert
the point of the bottle opener between the ring and lid. With pushing, the rubber ring is forced out of position and air is admitted, breaking the seal. The lid will lift off easily. Bottle Openers are Australian made and have a heat resistant handle. Using the specially designed bottle opener will prevent damage to lids, ensuring their re-use.