... °, 130°, 135°, 140° Application: The stylus can use forHell engraving machine kinds like K303. K304, K405, K5, K50, K500.Daetwyler engraving ... life expectancy.Octahedrons and rhombic dodecahedrons natural diamond with high purity diamond for stylus tips, which make sure the stable cell geometric ... is expectancy even after re-installed several times. Engraving stylus for high speed engraving machine