[304 Stainless Steel]This stainless steel burger maker is made of food-grade 304 stainless steel, which is not only rust-proof and , but also healthy, environmentally friendly and safe, and can be used with confidence. [Easy to Use]Our burger machine is ergonomic and labor-saving, both adults and children can easily the burger meat they want. Just determine the weight of the patty you want, it into the meat, then again, and you'll have a homemade patty. [Edging Treatment]We have done a edging treatment on the sharpness of the burger maker, because the stainless steel material to be too . But due to its non-stick, so the patty is very easy to shape, so you can enjoy the DIY time of making a perfect burger safely.