Designed for coffee machines: Activated carbon water filter replacements for Single Serve Grounds; compatible with ES601, ES655, and ESP. Please verify compatibility prior to for performance. Enhanced flavor experience: Our filters effectively remove impurities and calcium that can compromise taste, resulting in tasting beverages you can brew at home. Convenient installation: Quick installation and replacement without any additional tools, making upkeep hassle. Sustainable choice: Constructed from materials, this filter not only elevates your coffee experience but also supports environmental sustainability by reducing waste. Use scenario 1: Regular daily use with ES601 or ES655 machines to maintain consistent flavor across your morning beverages. Use scenario 2: Entertaining guests or hosting, ensuring each cup delivers reliable flavor with filtered water. Use scenario 3: In regions with mineralrich or hard water, using these filters helps reduce mineralrelated taste changes to preserve coffee quality.