This CNC probe stylus is designed for use with Renishaw OMP40-2, OMP60, and OMP400/OMP600 measuring probes. The stylus features a carbon fiber rod with a diameter of 4.5mm and a length of 88mm, and a ball diameter of 6.0mm. The thread is M4 and the package contents include 1 set of the stylus unit. The brand of this stylus is XINKEZHUN and it is made in China. It is ideal for metalworking inspection and measurement, and is a great addition to any business or industrial setting that requires high precision measuring tools.