54mm Portafilter Compatibility: Expertly crafted for 54mm portafilters, this KNODOS set includes a 54mm magnetic espresso dose funnel and puck screen compatible with Breville espresso machines and other compatible models. Magnetic Dosing Funnel Feature: Our 54mm magnetic portafilter funnel ensures a stable, mess-free coffee preparation. Please be aware that although our magnetic dosing funnel is constructed with 8 of the strongest magnets, some portafilter baskets may not be compatible with magnetic attachments. Before making a purchase, ensure that your portafilter can support magnetic features. IMPORTANT: This variation of 54mm dosing ring does NOT activate the integrated grinder in Breville Barista Express, Touch, Impress or Barista Pro espresso machines also NOT Compatible with breville smart grinder. We recommend this ring for customers who use a separate grinder. Magnetic Dosing Funnel Feature: Our 54mm magnetic espresso funnel ensures a stable, mess-free coffee preparation. It's compatible with Breville Bambino , Infuser and other 54mm portafilter espresso machines. At KNODOS, we're dedicated to combining functionality and artistry in our espresso accessories. Our love for working with wood is showcased in our product line, which includes Espresso Tamper,Bottomless Portafilters, WDT tools, Knock Boxes, Tamping Stations, Espresso Distributors, Coffee Bean Cellars and More. Experience the craftsmanship and passion behind our products