Eagle Rock Technologies, Inc is a specialty machine tool manufacturer that produces both Knurlcraft and Wettstein Tool lines. Knurlcraft features the Knurlmonster™ hand tools and Knurlcraft™ sets for a variety of knurling applications. The full lineup features expanding collets, collet holders, diamond holders, anti-backlash rings and much more. All Eagle Rock tooling options are proudly made in the USA or in Germany.