Freely stackable sieves for customizable grading; seamless design prevents beans from getting stuck in gaps. Includes a dedicated bean receiving tray to keep countertops tidy and support stacked sieves securely 10-layer grading sieves sort coffee beans into uniform sizes, ensuring even roasting, unlocking richer flavors, and elevating the overall quality of your finished coffee for better brewing results Crafted from stainless steel via one-piece die-casting, featuring a smooth, burr-free surfaces. And built to last with advanced edge-pressing for seamless mesh-to-frame fit Ideals for home brewers, professional coffee shops, and passionate coffee lovers. Standard grading design delivers consistent bean sizes, perfects for self-brewing, roasting, and crafting premium coffee Gradient mesh sizes from 21 mesh (8.33mm), 20 mesh (7.93mm), 19 mesh (7.54mm), 18 mesh (7.14mm), 17 mesh (6.74mm), 16 mesh (6.35mm), 15 mesh (5.95mm), 14 mesh (5.55mm), 13 mesh (5.15mm), 12 mesh (4.76mm)