The high quality requirements of HSS taps demand a perfectly ground profile on the cutting tool. The focus is on precise geometry and optimum hardness of the cutting edge of the tool. The proven Radiac thread grinding wheels meet these requirements perfectly. The vitrified bond system ensures high profile retention and hence short grinding times, as trueing does not have to be carried out so often. The result is maximum profile accuracy and the best hardness values for the cutting edges, which considerably reduce machining costs and increases workpiece quality.