Drill material - special HSS-XE quick cutting steel with passivating of GOLD-TECH.
Features of drills of HSS-XE:
The step tempering providing the high hardness of tip of tooth (to 68 HRC) and plasticity of shaft of drill;
Double geometry of cutting edges 2-CUT - the high cutting speed, optimum crushing of shaving, soft cutting, especially in the course of entrance and exit from preparation;
The struzhkootvodyashchy groove of special form which is completely ground by fine-grained diamond tool - low friction and decrease in probability of jamming of drill;
The ground internal cone - protection against jamming of core in drill;
Drills with covering of DURABLUE possess big resource, thanks to decrease in friction and formation of peening. Also these drills allow to drill SOZH without application if it is required.Range of diameters 12 … 60 mm (diameters 61 … 100 mm are laid off, available before full sale)
Drilling depth - 30 mm