These Vevor grinding sheets are designed as replacement grinding plates for compatible electric grain mill grinders. Made from marble, they support both dry and wet grinding for a range of ingredients including grains, spices, nuts, fruits, meat, sugar, and salt. The stone construction helps deliver fine, uniform grinding while helping preserve natural flavor and nutrients. These discs are made for compatibility with the Vevor GM-002 corn spice mill grinder and install easily for reliable performance.