1. 1.54mm PortafilterBottomless portafilter 54mm Breville 8 series BES880, BES878, BES875, BES870, BES840, BES810, Barista Touch/Express/Pro,Infuser, Duo Temp Pro replacement espresso machine accessories. Please carefully check the model of your coffee machine before purchasing, which can bring you a satisfactory shopping experience. 2. 2.Premium Espresso PortafilterThe strainer head of bottomless naked portafilter is made of 304 food grade stainless steel, ensures reliable with coffee powder. The professional filter screen with precision casting, can fully extract every drop of mellow coffee essence to ensure the delicate taste of coffee. 3. 3.Ergonomic Handle DesignThe handle of this espresso portafilter is made of ABS plastic. Smooth surface and ergonomic design to ensure comfortable and easy manual control during the extraction process. 4. 4.Extraction ImprovementWith 54mm bottomless portafilter by , the bottomless design makes it convenient for you to observe the process of coffee extraction more intuitively. This helps you to identify and correct extraction issues, getting a fantastic and consistent espresso coffee every day.