Grinder is made of 304 stainless steel and heat-resistant glass, and the high-quality ceramic grinding core for better grinding and more safe and durable. An efficient adjustable non-corrosive ceramic grinder on the top of each salt pepper grinders, Whether you like a fine or coarse grind, just simply twist to adjust. The transparent glass body of the grinder allows you to clearly see the seasoning inside without taking it wrong, Keep your spices fresh by using the included steel lids to cap off each mill. Each individual salt and pepper grinder features a generously sized capacity can grind not only salt and pepper, but also cloves, cumin, peppercorns, etc. Since glass products are easily broken during transportation, if you receive the broken one or the salt pepper grinder set that does not work