SUPERIOR GRAIN RESULTS: The precision cone grinder of our manual coffee grinder is made of ceramic and the ceramic grinding core is adjustable in thickness, which makes it extremely durable. The grinding process produces minimal heat, so your freshly ground coffee will retain all of its aroma. High Quality Processing: Our manual coffee grinders are made from 304 stainless steel. This also applies to the handle, which also makes it absolutely rust-free compared to many other stainless steel grinders. The folding handle is easy to store, polished and smooth, and won't slip or get stuck MULTIPLE USES - The grinder can grind not only coffee beans but also whole beans, nuts and rice. Product size 5.2*17.5cm Perfect coffee enjoyment: Slow manual grinding produces no heat and preserves the aroma of the coffee beans. With food-safe materials, you can be sure your coffee will taste just like your favorite beans. Customer Service: If you have any questions about our products. Please feel free to contact us, customer service will 100% solve the problem!