- Premium Quality Materials: Our size 4 coffee filter is crafted from high-grade 304 stainless steel and food-safe polypropylene. This combination ensures exceptional resistance to corrosion, rust, acid, alkali, heat, and wear, making it the perfect choice for serious coffee enthusiasts. - Superior Filtration: Designed for direct coffee filtration, this filter attachment simplifies your brewing process. With a 100 mesh fineness, it guarantees excellent permeability, resulting in evenly filtered coffee that enhances flavor and aroma. - User-Friendly Design: The size 4 permanent coffee filter features a comfortable plastic handle for easy handling. Adjusting the filter, disposing of coffee grounds, and cleaning is effortless, allowing you to enjoy your coffee without hassle. - Large Capacity Compatibility: Ideal for coffee machines producing 8 to 12 cups, this filter accommodates size #4 filter paper with a top diameter of 120mm, ensuring a snug fit in your coffee machine for optimal performance. - Practical Applications: Perfect for daily brewing at home, entertaining guests, or preparing coffee in the office, this filter enhances your coffee experience. Enjoy rich, flavorful coffee without the need for disposable filters, making it an eco-friendly choice. Choose our premium coffee filter for a reliable, high-performance brewing experience that meets all your coffee needs.