45 rice rolls stone mill 1 hour grinds 20 kg of rice. The upper grinding disc of model 45 stone mill has a diameter of 45cm and weighs about 400kg. It grinds Mi Yue 20kg per hour. This millstone is made of Yunfu natural black sesame stone by hand. Black jute stone is gray and white with black sesame seeds when it is dry, and it is very beautiful when it is wet. Its stone is hard, durable in grinding, smooth and dirt-resistant, clean and beautiful, and it is an ideal stone for grinding.