Breville 54mm portafilter holder for DF64 grinder

Breville 54mm portafilter holder for DF64 grinder.

The height of the portafilter as measured from top of the portafilter ears to the bottom must match up otherwise the portafilter won't sit in place. I've this one https://www.amazon.com/dp/B08HYNCM89 which measures 33mm. Also, this is designed to be used along with a metal dosing ring, as it relies on portafilter ears to stay in place.