[Compatibility] This 51mm two-ears portafilter is designed to fit ECP3420, EC155, BCO430, EC260, and other compatible two-ear coffee machines. [Filter Basket Included] Includes a 51mm stainless steel filter basket that is compatible with standard 51mm filter systems. [Extraction Improvement] The bottomless design allows for clear observation of the espresso flow, including stream formation, extraction rate, and color, helping identify channeling or inconsistencies for improved extraction uniformity and better-tasting espresso. [304 Food-Grade Stainless Steel] Constructed from food-grade 304 stainless steel, this portafilter is safe, non-toxic, and hygienic, offering excellent resistance to oxidation, corrosion, and rust, ensuring long-term durability. [Removable & Easy to Clean] Features a detachable design for quick and easy disassembly, allowing thorough cleaning without hard-to-reach corners. Compatible Models: BCO420, BCO430, BCO432, EC152, EC155, EC155M, EC156B, ECO310, EC0311, EC330, EC330S, EC702, EC200, EC221, EC235, EC260, ECP3420, ECP3630, ECP3220, ECP3220W, ECP3220R, ECP3120, ECP33.21, ECP35.31, ECP36.31 Material: ABS + Stainless Steel Color: Black + Silver Package Contents: 1 x 51mm Portafilter Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.