Description: Tool: This is a grinding bowl designed specifically for pottery pigments. It's finely crafted from select materials, ensuring durability and longevity. It can be used repeatedly, making it an essential tool for pottery .Easy to Use: The operation of this grinding bowl is simple and convenient. To use, first place the materials in the bowl, then apply pressure and add water. Finally, use a grinding rod to grind vigorously.Quality Material: Made from ceramic material that is durable and strong, this grinding bowl will withstand repeated uses without losing its efficiency.Product: The grinding bowl is enough for easy storage yet large enough to hold sufficient quantities of pigments for your pottery needs.Package Includes: These ceramic grinding bowl sets ensure you have everything you need to start creating beautiful pottery pieces right away. Size Chart: 15.5cmx7.5cm/6.10inchx2.95inch Package Includes: 1 Porcelain Mortar1 Pestle Note: Please allow slightly errors due to manual measurement and different monitors.