【Elevate Your Roasting Consistency & Quality】：By precisely sorting coffee beans into uniform sizes, this grading sieve eliminates uneven roasting caused by mixed bean dimensions. Consistent sizing ensures every bean develops evenly, unlocking richer flavor profiles and a more professional, high-quality finished roast. 【Premium Die-Cast Stainless Steel Construction】：Crafted via a one-piece die-casting process from food-safe stainless steel, each sieve features smooth, rounded edges and seamless edge-pressing technology. 【10-Layer Precision Grading for Raw & Roasted Beans】：The removable, stackable 10-layer design enables multi-stage filtration, with mesh sizes tailored for both green (12–21 mesh / 4.76–8.33mm) and roasted (21–30 mesh / 8.33–11.9mm) beans. 【Intuitive, Hassle-Free Operation】：The smooth, polished mesh surface allows beans to slide freely during screening, while the magnetic adsorption bean outlet (with a stainless steel sheet) enables quick, tool-free disassembly and reassembly. 【Space-Saving Portable Design with Storage Case】：At just 13mm thick when stacked, the 5-frame, 10-layer set is ultra-compact for efficient storage. The entire kit fits neatly into the included hard storage case, making it easy to transport between roasteries, coffee farms, or home setups.