Product details: The grinder is made of plastic and the cylinder is made of acrylic glass. To fill the mill, the spring is pressed down, the pin is pulled out from the side and the lid is lifted off. The grinder is not suitable for pepper. Each item is unique and differs not only in shape/dimensions, but also in grain/color. Clean the unique item with water and a little detergent if necessary. Rub with a little vegetable oil at regular intervals. Not suitable for dishwashers.