50 mm rubber, blank, blind filter for back flushing group heads. Can be used with any commercial solenoid operated group head.
Should not be used on lever machines or units that do not use a three-way solenoid for dispensing water from the group.
Small home units such as the Saeco Aroma, Via Venezia and Sirena, Breville, Francis Francis/illy, Delonghi and Capresso semi-automatic models do not use a solenoid to dispense the water, so no need to back flush these.
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.