I put this on my portafilter so when I'm using my WDT Distribution Tool, I'm not knocking grounds out of the portafilter and onto my coffee station. I bought this particular funnel since it's solid aluminum, easy to clean and due to it's weight and a shallow lip, didn't need magnets to hold it in place. I like kitchen gadgets that are metal, all one piece and durable. This is precisely that and should last a lifetime. Recommended if you're looking for this in your own coffee setup.