This portafilter is inferior to the original that came with the Rocket. It is lighter, and the spouts are on the handle side of the filter, meaning the shot glasses are teetering at the edge of the drip pan. I've discarded it and am returning to the original portafilter, even though the edges are abraded.

This is a beautiful and incredibly well made Portafilter which comes with the Rocket Espresso IMS Precision Portafilter Basket. I am using it with my Giotto R. Easily holds 19 grams and it sits much more level for more even tamping. My only negative is that the spouts are on the back of the Portafilter, not the front as with the Portafilter that came with my Giotto, which is why I gave this 4 stars. It still works well, especially with the Acaia Lunar Scale. Of note, per the Seattle Coffee Gear Support team, you cannot rotate the spouts. Not sure this portafilter has a large effect of coffee taste but it does stay much cleaner given the stainless steel. Highly recommended from my perspective!