Otto Frei stocks the complete line of made in the USA Glendo GRS products from GraverMach AT engraving systems to quick change pre-cut gravers. We are also proud to be the exclusive distributor of JURA tools for Microstonesetting in the United States. We also stock Genuine Swiss made Glardon-Vallorbe gravers including the industry leading yellow tang HSS gravers. Our line of engraving machines includes computerized BestBuilt systems and the original manual engraving machines.