☕54mm Dosing Funnel designed for Breville: Our portafilter funnel has been updated with a groove that makes it fit more snugly to a 54mm portafilter. It is specially designed to work with Breville 54mm portafilter baskets, including Breville/Sage Barista Series BES880, BES878, BES875, BES870, BES840, BES810, BES500, Barista Express, Barista Touch, Barista Pro, Infuser, and Duo Temp Pro. ☕Hands-Free Dosing Funnel: Simply twist to lock onto your 54mm Breville portafilter and sit securely on the portafilter under the built-in grinder to automatically grind. With a twisting lock, it attaches securely and is easy to connect and remove. There are grooves meant to slide into the chute, and then the front tap auto-activates the grinder for a perfect dose. ☕Reduces the Mess and No More Waste: Easy to hold a full 21-gram shot, great for coffee grinding, avoids spillages, and no more waste of your coffee with this 54mm dosing funnel. Compared with a cup, it is more convenient and saves space. ☕Lightweight & Easy to Clean: The coffee powder funnel is made of aluminum alloy, weighing only 2.3 ounces. The food-grade material is healthy and safe for your family. The 54mm Dosage Ring can be washed in the dishwasher or cleaned with a brush. ☕A Worthwhile Investment: This 54mm dosing funnel is specially designed for Breville and is made of premium aluminum alloy, sturdy enough for long-term use. If you encounter any problems, please contact us first. We will provide you with a satisfactory solution.