the Breville Cafe Roma uses 51mm portafilter basket. This model allows you to dose grounds into a cup with a detachable funnel. The dosing cup then fits nicely into the 51mm portafilter basket. The funnel also has a circumferential groove so locate nicely directly on the porta filter basket. Also fits nicely as a dosing cup for the Baratza Encore Grinders
The author marked this model as their own original creation.