Features: 1.Premium gra grinding, long-lasting and strong: Zinc is stronger and more durable than aluminum. Our grinders are made from the highest quality material to ensure you get a perfect crush every time and your grinder lasts forever. 2.Special design, unique to grind perfectly: 40 mm, best grinder; A superfine pollen filter and deep pollen capture make the perfect crush in a great herb grinder, tobacco grinder, or spice grinder. 3.Ideal for spices, herbs, tobacco: Use this first-cla grinder to grind and grind any type of herb, spices and tobacco leaves. It is ideal for grinding herbs into small pieces, making them more powerful. Additionally, this four-piece rotary grinder can be used to grind whole spices, herbs, and tobacco leaves. 4.Easy to use: Herb Grinder can help you save time as it is extremely easy to use. You just have to twist the top a couple of times. It has textured grooves on the top and bottom pieces to provide a firm grip. 5. Keep clean:It is very easy to keep clean with soap and water, while the scraper can remove pollen particles from the pollen catcher. Description: Our grinders are made from the highest quality material to ensure you get a perfect crush every time and your grinder lasts forever. Specifications: Material: aluminum alloy Category: Metal Grinder Style: 4 layers, round Package Included: 1pc*Metallic Spice Grinder Notes: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.