The Workflow OptimizerOur custom designed 54mm dosing cup has been developed to work specifically with Breville/ Sage 54mm and 54mm Solis portafilters.Our dosing cup can also be used with stand-alone grinders, such as the Breville/ Sage Smart Grinder Pro, and the Niche Zero.Note: For use with the Smart Grinder Pro, the portafilter holder must be removed.