Big Chief premium brand grinders deliver on both durability and quality. The anodized aluminum design, an oxidation process that adds an extra protective layer, is vital to fighting wear and tear that you would experience with most other standard aluminum grinders. Each 4 piece grinder comes with a stainless steel sifting screen, and bottom storage compartment with a plastic scraper. The grinder is 50mm (about 2 inches) giving you all the grinding room you could ask for.