HSK100A Face mill shank HSK100A FMB Face internal cooled water typeHSK100A Face mill shank HSK100A FMB22 27 32 40 60 Face internal cooled water type 1. The end face and mandrel are clamped and finely ground at one time, which can make the perpendicularity between the end face and the mandrel better, and the cutter head and the tool handle are tightly fitted Better shock resistance 2. Carburizing and quenching process is adopted, which has high thermal strength and oxidation resistance, high hardness, strong wear