Key Features Grinding & Tamping Can Be Messy BusinessOverflowing grinds and tamping can lead to mess which is a hassle to clean, and no one wants to waste precious coffee. Less Mess, Less WasteFunnel attachment for the portafilter prevents coffee grinds from overflowing to help reduce mess and waste Attach, Dose, Tamp & DetachTwist the funnel onto the portafilter and insert into the grinder cradle. Once you’ve dosed, simply tamp while it’s attached to save time. Compatible with Breville 54mm portafilterDesigned to fit BES870/875/878/880 portafilters and works in the grind cradle of the machines.