An anodized aluminum dosing funnel sits on your portafilter to help keep ground coffee contained while you dose, distribute or stir. That means less waste on the counter and a smoother workflow from grinder to tamp.
The magnets help the funnel stay seated on the portafilter so you do not have to hold it in place. This is especially useful when you are leveling grounds, using a distribution technique or giving the portafilter a gentle tap.
Yes, the dosing funnel is designed to let you stir and break up clumps while keeping grounds from spilling over the sides. It helps contain the coffee as you work around the basket, then you can remove it before tamping.
Fit can vary by portafilter style and basket shape. Since specific compatibility details are not listed here, it is best to compare the funnel to your portafilter rim and any accessories you use during prep.
It is a great pick for home baristas who want a cleaner station, less wasted coffee and fewer interruptions during prep. If you frequently distribute, stir or tap your portafilter, it can make those steps feel more controlled and less messy.