Borosilicate salt and pepper grinder set Adjustable coarseness salt and pepper grinder set A plastic knob on top of each salt and pepper mill allows you to easily make adjustments from a fine to coarse grind. Ceramic grinder The ceramic grinder in our mills is non-corrosive and won't absorb flavors. Elegant design with borosilicate glass The high quality and elegant design make the salt and pepper shaker looks unique in your kitchen. Perfect for Gift for any Festival. High Quality Glass high grade borosilicate glass jar can hold more contents, compared with common glass, physical strength. Ceramic Burr High-quality Adjustable coarseness ceramic grinder is non-corrosive and won’t absorb flavors Adjustable Grinding This grinder comes with 4 precision setting. You could adjust grinding gear to choose the coarseness when you use it first. High-Quality Glass Ceramic Adjustable