Pullman 19g-22g Precision Filter Basket has 876 precision cut holes. Polished, no burrs, no scratches, no deformed holes. Providing a consistent and uniform performance for the life of the basket. Improves clarity, consistency and results in better extractions overall. Made of high quality stainless steel material. Especially for modern roasts tds increase of 0.1 percent and extraction increase of 0.2 percent , 0.5 percent increase for modern roasts and better performance on most tasting attributes including acidity, sweetness and finish.