TEEFAN Slender Lead Free Glass Jar and Adjustable Ceramic Grinding Rotor Salt & Pepper Grinder Mill, Easy to Refilled Exchangeable and Anti-Abrasive/Corrosion for Long Term Use, Set of Two,Green Easy cranking to turn coarse sea salt, pepper and other fillers into fine consistent powder with a good quantity. The both mills are interchangeable. You can easily adjust the grind grade in them from coarse to fine. Both gears that grind the spices are made of ceramic. They will not rust or transfer any taste onto the spices. The material of this item is safe for your health. It also has a plastic lid that covers the open end to keep dust or other contaminants out. This item does not come filled spices, you can fill them with your own selection anyway. Bought some Himalayan salt, coarse sea salt or fresh pepper, it works fantastically. Take it totally apart and wash with water or white vinegar, make sure it totally dried before use.