Normcore 51mm Magnetic Dosing Funnel, Espresso Dosing Ring, 18mm Anodized Aluminum with 8 Neodymium Magnets Compatible with 51mm Delonghi Decica Portafilter, BlackSUITABLE FOR 51MM PORTAFILTER Designed and compatible with Delonghi EUPA SMEG 51mm portafilters. Made to work with fellow Normcore products, and generally other 51mm coffee machines. SNAPS ON SECURELY Comes with 8 Neodymium magnets line the ring so it snaps flawlessly to your basket. The magnets are pressed to fit directly to the ring, and no glue is used. EASY TO LIFT Inspired by the filter lens used for camera design, the side edge knurling provides