Usage Tips: COMPATIBILITY. This two ears portafilter 51mm is compatible with ECP3120, ECP3420, EC155, BCO430, EC260, and other 2 ears coffee machines. Start your day with a perfect cup of coffee. FOOD GRADE 304 STAINLESS STEEL. Made of 304 stainless steel, this portafilter offers oxidation resistance, corrosion resistance, rust resistance, and long-lasting durability. SUBSTITUTABLE. The 2 ears bottomless coffee portafilter includes a 51mm filter basket that is compatible with standard 51mm filter baskets. A GREAT HELPER FOR MAKING COFFEE. The bottomless design allows you to observe the flow column, flow velocity, and color more intuitively during extraction, helping you identify and improve extraction issues. Become a better barista with precise control. REMOVABLE HANDLE. The bottomless espresso portafilter features a wooden handle designed for comfort and stability. The ergonomic structure provides a secure grip and smooth operation. Color: As Shown. Material: Stainless steel + wood. Size: 51mm. Package Contents: 1 x Bottomless Portafilter with Filter Basket. Only the above package content is included; other products are not included. Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the photo and the actual product. Measurement may vary by +/- 1-3 cm.