Espresso Blind Filter Standard Metal 58mm 1. This 60mm blind filter is used for back flushing on semi-automatic espresso machines that have a pressure release mechanism. 2. It fits into the group handle in place of the standard filter. 3. Back flushing your coffee machine helps to remove coffee residue which builds up inside of the group head. 4. The blind filter can be used in conjunction with cleaning tablets. 5. Please ensure that your coffee machine features an appropriate pressure release valve and that the diameter is correct for your coffee machine. 6. Always follow the manufactures cleaning instructions. Show More Show Less
