Safe Material & Precise Size- Made of 304 stainless steel and food-grade nylon,this filter resists high temperature (suitable for coffee extraction heat) and corrosion.Product Size: 8cm (diameter) × 5cm (height), for standard 4-cup coffee maker baskets. Reusable & Cost-Saving- Replace disposable paper filters with this reusable one,reducing long-term use costs.No need to buy paper filters repeatedly,eco-friendly and economical for daily use. Wide - Specifically designed for 4-cup capacity,it fits most home coffee makers (Keurig K-Duo) and small commercial machines in cafes/offices.Also works with mugs for direct filtering. Easy to Clean- Smooth surface with no burrs,coffee residue can be cleaned simple rinsing or soaking.Saves time on maintenance,convenient for daily quick use. Multi-Scene Use- With 0.09mm uniform mesh,it filters coffee grounds while retaining coffee oil and aroma.Also compatible with tea leaves,realizing residue separation for both coffee and tea..