54mm Dosing Funnel: It fits the 54mm Breville Sage portafilter ( barista express) perfectly, works with the grinder, and makes grinding and tamping both easier and much less prone to spilling. No Mess: Useful addition to your Coffee Bar. Zero wastage of coffee and much easier to distribute the coffee in the basket without spilling. Compatible With: All portafilters that require a 54mm diameter tamper, Sage Barista Express, Barista Touch, Barista Pro, Infuser, Barista Pro, Bambino and Duo-Temp pro. Easy to Clean: The dosing funnel made of aluminum metal which can be cleaned quickly with brushes, sponges. Fits the Sage Barista Express perfectly The dosing funnel fits 54mm portafilter, please make sure that your basket is 54mm before shopping. 54mm espresso dosing funnel No mess anymore This dosing ring keeps the coffee grounds from going everywhere, and has clearance so you can tamp without removing it. dosing ring Amazing coffee accessrioes Makes the job so much easier and keeps the machine a lot cleaner. Great addition to your barista collection.