Premium Quality of the Cheese Grater – All parts of the rotary grater are made from food grade material and non-toxic BPA-free, which are safe to use. No electrical needed. The 3 different shaped blades are made from 430 stainless steel and will not dull or rust, ensuring you can grate ingredients faster. We also committed to let our customer enjoy healthy food with ease so we only produce safe products and hope every customer can be satisfied with our product and service.