Drill bit for chipboard screw – BLADE BBIV5

Drill bit for chipboard screws simultaneously drills and starts wood screws (without changing drill bits).
Two-degree drill bit (5/7 mm) makes clean and smooth holes.
It possesses a specially designed steel starter (bush) for starting and expansion of the central screw head hole.
The depth of bush (starter) is tuned with Allen torque wrench. For the screws of different lengths, the drilling depth may be tuned by simply releasing or tensioning the set screw.
It is used for wood screws and nut screws (fasteners) as well.