Thriftedge... In 1964 we chopped a solid dovetail form tool into 4 pieces: Holder, anvil, clamp and insert. We started improving it that very day as we continue to do so today. New carbides, better HSS, unique application driven coatings, more stable tool steels, engineering creativity and improved manufacturing processes make it possible for Peterson Tool Company to be the world's leader in the design and manufacturing of inserted form tools.