Narrow production tolerances with micrometer accuracy in mold, small end mill concentricity and diameter (radius tolerances from +/-0.003 mm, concentricity tolerances from 0.002 mm and diameter tolerances from 0 / -0.010 mm). By integrating advanced  CNC grinding machines Rollomatic,Makino and Walter etc, OSG high-performance coatings, and Zoller's precision inspection technologies, we guarantee excellence with every product—consistent, reliable, and precise.