Exquisite Workmanship Prevent Backflow The grinding nozzle/outlet is designed to prevent backflow, and the widened outlet allows rapid flow diversion. Grinding Process After dozens of manual grinding process, the surface is smooth and easier to clean. Grinding Teeth The grinding teeth of the stone grinder are carefully polished and arranged closely and neatly. Innovative Design Metal Fixture The steel nails inside the handle are fitted to the stone mill to increase its stability. 304 Stainless Steel for Grinding Core The core of the stone mill is made of 304 stainless steel pieces.More durable and harmless Flexible Handle The bearing is inside the handleThe handle can be turnedEasier to use and more ergonomic 3 sizes for choice Upper Diameter * Lower Diameter Small Size: 7.87 inches * 11.8 inchesMedium Size: 8.6 inches * 13.7 inchesLarge Size: 9.8 inches * 15.7 inches Fun Grinding/Teaching Tool It is also a fun teaching tool for children, who can experience the ancient and wise grinding tool.Grinding wheat flour, pepper, sesame, almonds, corn juice, spices, wet soymilk, mung beans, prickleyash and other small grains. It is a grinding tool as well as a handicraft It is not only a tool for grinding food, but also a handicraft.Decades from now, it will be a perfect souvenir and becomes a vintage and unique ornament in your house/courtyard