54mm Espresso Dosing Funnel for Breville Portafilters, Aluminum Magnetic Coffee Dosing Funnel Ring Compatible with Breville 54mm Portafilters,Espresso Accessories Tool(Walnut)Perfect Fit for 54MM Portafilters Specifically designed for 54mm portafilters, this espresso dosing funnel fits perfectly with breville portafilter and generally other 54mm series portafilters. This 54mm dosing funnel makes dosing smooth and mess free. Steady Hold with 8 Strong Magnets With 8 powerful magnets at the base, this portafilter funnel stays securely in place on the portafilter. No slipping, no spillsjust set it on and let it work. Elegant