Cliff & Pebble recommended the Rocket bottomless portafilter over a more expensive one to go with my Rocket Espresso machine. The portafilter is heavy and well made. My only nitpick is the plastic has a sharp edge in one place, but it doesn’t effect function and doesn’t get in the way when using it. I’m very happy with the purchase and would buy again, but I don’t anticipate buying another portafilter anytime soon as this one will last a long time.