Material: The grinder is made of premium zinc alloy and features electroplated surface, smooth and durable. Transparent lid: The top of the lid is transparent and the grinding state can be observed, the filtration device allows better separation of large particles from finer particles. 【Multi-layer design】The 4-layer, 3-chamber design of the herb grinder ensures optimal performance. The bottom compartment can collect herb powder while filtering through a mesh filter. 【25 Sharp Blades】Specially designed teeth for optimal grinding performance - Precise grinding holes ensure better grinding , high efficiency and effortless sanding. Grind your herbs effortlessly, fine remains are picked up by the filter filter. Heavy duty grinder with strong magnetic lid to prevent spills, keeps your herbs fresh and smells stay in the grinder. Effortless Grinder - Smoothly grinds your herbs or to a finer consistency for picking up herbs in the central chamber, while the fine pollen filters end up in a