The Jongen UNI-MILL VHC 567W HX70 is a specialist for the trochoidal milling in the area of hard machining. The new VHC-tools of Jongen enable the process reliability at high cutting depths, cutting speeds and feeds, and can be simultaneously applied with low cutting forces even under critical machining conditions Due to the increased number of teeth with 5 teeth, the feed speed can be increased and, therefore, the processing time can be reduced. Optimized micro and macro geometries allow a high cutting volume and result in longer tool life. The differential tooth pitch prevents vibrations and ensures very smooth running as well as high process stability. Optimized chip spaces provide an optimal chip flow. The holding shank of the tools is made to DIN 6535-HB (Weldon) and enables stable mounting of the tool. A toric cut of the tools enables increment of utitlity length to a DIN-clamping length.