For use with automatic and manual espresso machine. Scale is a surface build up of minerals that naturally occur over time in all appliance that are involved with the heating of water. To restore efficiency of your espresso machine it is recommended that the machine is descaled every 4-6 months, this will vary depending on the frequency of use. Features: Removes scale build up Restores efficiency of the espresso machine Prolongs the life of the appliance Contains 4 tablets