Specification
  Spring steel shaft: For preventing deformation.
  Screw point tip: For pulling the bit through the wood easily.
  Flute: For ejecting the chips faster.
  Fisth hole: (Tip/Shank): For using together with wire or the grip of the cable.
  Precision welding technology:
A. Clean and beautiful welding - Without any welding salg.
B. Strong welding - With stand the torque more than 300 pounds.
C. Precision wdlding - With homocentric rotation provides accurate and smooth drill.

Application
  For installing the wire, telephone cable and internet cable.