Feature●High Speed Drill●TiN Coating●Low carbon steel (C~0.25%): Medium carbon steel (C0.25%~0.45%): High carbon steel (C0.45%~): ◎ Alloy steel: ◎, Consistent steel (~35HRC): ○, Tool steel: ◎, Cast iron: ○, Ductile cast iron: ○, Aluminum alloy casting: ○, Magnesium alloy: ○, Aluminum stretcher: ○●Torsion angle: 30°●Material: HighDescription
The midway groove length of the stub and regular provides a non-step high-speed processing up to 4 times in diameter even small diameters.