Each Kannastor Black Series comes with a 60 Monofilament Easy Change Screen. Why Monofilament? Monofilament is the solution to a perfect sift. Although our Stainless Steel screens are best in class, our NEW Monofilament screen yields the highest quality pollen possible in the market today. Grinder Features: Size: 2.5" Includes a 60 Monofilament Easy Change Screen™ (Patents Pending) Engineered drop through design prevents over shredding Modular by Design Matte Black Finish Made from 61/60 Anodized Food Grade Aluminum Limited Lifetime Warranty