In case of emergency (real= the dog ate my portafilter, or imagined= zombie apocalypse) keep a replacement 57mm Ascaso portafilter on hand. Ascaso's portafilter can be used on the Ascaso Basic, Dream and Uno Special Edition espresso machines.
This portafilter will not fit the Uno Pro or any of the Duo models, which have 58mm portafilters.
Best Answer:Yes, these should fit pressurized filter baskets just fine. The older portafilters were not deep enough to accommodate the pressurized baskets, but are fine for the non-pressurized baskets. The newer portafilters are slightly deeper in the center. Hope this helps!