HEALTH AND SAFETY: The salt and pepper mills are made of natural wood and contain no preservatives or glues inside. The exteriors of the salt and pepper mills are carefully polished by hand. They are very refined, smooth and comfortable. Adjustable Grinding: The salt and pepper grinder has an adjustable ceramic grinding core, you can easily adjust the grinding from fine to coarse by turning the nut superior. Tighten fine grind, loosen coarse grind. Easy to use: The transparent bottle allows you to check the grinding thickness and the remaining seasoning inside. There is a high-strength ceramic grinding core in the salt and pepper grinder. Ceramic is an excellent abrasive material. It is very resistant. And, because it’s non-metallic, it will never rust. Wide range of applications: Thanks to their versatile use, our pepper mills have become the perfect staple in homes, kitchens and restaurants. It can be used to grind a variety of seasonings, black pepper, white pepper, chilli, crystal