51mm Espresso Dosing Funnel Magnetic works with CASABREWS/Delonghi 51mm Portafilter and sits outside the portafilter for tidy dosing. Ideal for home baristas. Its bottom lip matches the 51mm portafilter precisely, helping keep grounds visible and preventing powder from hiding. Eight neodymium magnets secure the dosing ring to stay in place during use, though magnet strength can vary with basket material as some baskets are less magnetic. Constructed from aluminum alloy, the funnel is rust resistant and easy to clean by hand. Its 20mm tall profile with tapered sides directs grounds into the basket and minimizes spills. Features: Fits 51mm Portafilter with a bottom lip that matches the 51mm portafilter precisely, leaving no space for powder to hide Outer Ring design allows distribution and tamping while the funnel is attached Eight neodymium magnets secure the dosing ring to prevent detachment during use 20mm tall design with tapered sides directs grounds into the basket and minimizes spills Aluminum alloy construction is rust resistant and anti-corrosion Easy cleaning by hand with no nooks or crannies to trap grounds