The cartridge is installed in the spindle of the CNC lathe and is used as a collet sleeve. A modification of the machine is not necessary. The robust design of the cartridge ensures reliability and longevity in the most demanding production processes, while providing the highest precision. They are supplied with a long nose as standard so that tools and coolant have easy access to the workpiece. The cartridges are available for the draw-type collet systems and push-type (dead length) systems. Each cartridge is supplied with a face dial wrench.