1.[51mm Portafilter]:The 51mm bottomless portafilter 2 ears compatible with ECO310, EC0311, BCO420, BCO430, BCO432, EC152, EC155, EC200, EC221, EC260, ECP3120, ECP3420, ECP3630, ECP3220, EC330, . 2.[Premium Espresso Portafilter]:The professional filter screen with precision casting, can fully extract every drop of coffee essence to the delicate taste of coffee. 3.[Ergonomic Handle Design]:The handle of this bottomless espresso portafilter is made of ABS plastic. Smooth and ergonomic design to comfortable and easy manual control during the extraction process. 4.[Extraction Improvement]:The bottomless design makes it convenient to observe the process of coffee extraction more intuitively. This helps you to identify and correct extraction issues, a fantastic and consistent espresso coffee every day. 5.[Removable & Easy to Clean]:Our bottomless coffee portafilter 51mm 2 ears adopts detachable design, can be easily installed and removed, simple operation and easy to clean thoroughly.