Made for 51mm portafilter (Delonghi Dedica) and for my 1Zpresso J-Max hand grinder.
After distributing the coffee in the portafilter and removing the funnel, there might be a slit on the edges where the funnel was located. Just give the portafilter a tap to create an even surface.
Is seeing a lot of use as you might guess from the picture, but still staying strong.
The author marked this model as their own original creation.