1. ADJUSTABLE COARSENESS: Choose from a variety of grinding levels to grind the seasonings you want into particles of varying roughness. Rotate the knob to select the roughness, providing the grain size from very fine to very coarse. 2. HARDNESS CERAMIC GRINDING CORE: Our salt mill uses a ceramic grinding core. Fired at temperature and pressure, it is cold and heat resistant and has hardness. This not only prolongs the product's service life but also produces fine powder and makes grinding easier and smoother. 3. CONSTANTLY KNOW HOW MUCH YOU'VE GOT LEFT: The bottle body of the salt grinder is made of transparency PC material, allowing you to monitor how much is inside and easily tell when it needs refilling. Rest assured it can withstand years of use. 4. REMOVABLE AND EASY TO CLEAN: This salt grinder is easy to disassemble and reassemble, enabling effortless cleaning, ensuring no seasonings or dirt are left, enhancing your experience.