High quality material. The grinder is made of high quality aluminum alloy and features a strong magnetic cover, enhancing durability. The magnetic cover helps hold spices securely and reduces spills. Strong and secure magnetic lid: The powerful magnet keeps the lid tightly closed during grinding, preventing herbs and spices from falling out while allowing smooth movement between the two grinding chambers. Sharp teeth: The grinder has ultra-sharp teeth that effectively grind spices into consistent particles. Easy to use and carry: The 4-piece design is simple to disassemble and operate. Includes a small scraper to help collect ground material and assist in cleaning. Compact size makes it easy to carry in a pocket or bag. Wide range of applications: Ideal for grinding spices, tea, and similar dry materials. Enhances aroma and flavor release after grinding.