A magnet is integrated into the lid of the delicatessen jars. To ensure that the delicatessen jars stay in place during the journey, they must be combined with a metal counterpole . A metal bar is included in the set for this purpose. The force ratio between the magnetic delicatessen jars and the metal bar is perfectly balanced, so that the delicatessen jars are fixed by the metal bar on the one hand, but can also be easily removed from the metal bar on the other. The thick metal core inside the bar means that the pulling force is strong enough to allow the jars to hang upside down even during the journey . In the future, you can store your delicatessen jars safely, rattle-free and in a space-saving manner in the cupboard. The metal strip is permanently attached using 3M adhesive tape . Please note the installation instructions on the product page. Highest quality and Made in Germany are our standards.