＊The optimum geometry of the tool to achieve the better reliability and less vibration and cutting load. ＊Interchangeability with i-Xmill ball holder, but the precise cutting is possible with i-Xmill corner radius holder due to higher stability and strength of tool. ＊The various and wide cutting range makes it possible to machine over the roughing and finishing. ＊Special coating makes high hardness with high thermal stability against oxidation.