Features: Advanced Two-Layer Pressure System: Features a unique two-layer pressure structure to improve brewing pressure, ensuring consistent water flow through coffee grounds for a richer and more intense coffee extraction. Wide Compatibility: Works with most 51mm espresso machines, providing smooth integration for professional-grade coffee brewing in various settings. Flexible Capacity Choices: Offered in single-cup (7-9g coffee) and double-cup (14-18g coffee) setups, addressing individual or shared brewing requirements. Exceptional Durability and Safety: Constructed from premium stainless steel, it surpasses plastic filters with better longevity, stability, and safety at high temperatures, ensuring no harmful substance transfer. Perfect for Coffee Enthusiasts and Professionals: Ideal for coffee lovers and baristas aiming for high-quality coffee, enabling the discovery of diverse flavors and creative mixes in any environment. Specifications: Material: Stainless Steel Color: Silver Applicable Model: For EC331 EC680 EC685 EC695 EC820 EC850 EC860 ECF01 ECO311 ECP31 ECP3220 ECP33 ECP3420 ECP35 ECP3630 ECZ351 Diameter: Approx. 2.06inch(5.24cm) Package Includes: 1x Coffee Stain Powder Bowl note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.