This is a set of 3 clay cutters for polymer clay. You can use them as a set or individually. I purchased them from the popular overseas shop, Roclayco. There are no burrs or seams. The finish is very clean and high quality. I bought these and treasured them, but I'm selling them because I don't have a chance to use them. They are new and unused. Considering the international shipping costs, this is a great deal. The image on the 9th slide is a sample work using the cutters.