151mm Stainless Steel Portafilter Basket: Filter basket with ultrafine holes to ensure the delicate taste of coffee, delivering smooth and rich flavor. Let you enjoy a cup of delicious coffee in your leisure time. Efficient Extraction: Designed with the maximum number of holes on the 51mm filter basket with optimal hole size for seamless coffee extraction. Compatibility: 51mm coffee powder filter bowls are suitable for semi-automatic coffee machines or 51mm coffee portafilters, a practical accessory for coffee machines. Stainless Steel Material: Reusable coffee filters are made of food-grade stainless steel material, anti-rust, wear-resistant, durable and practical. Non-toxic, healthy, and environmentally friendly. Easy to Use: Coffee portafilter basket is easy to install and easy to use, an essential tool for every coffee lover and homemade coffee, suitable for household, cafes, bars, and more.