Extensively used for recessing bolt and screw heads.
The high speed steel pilot bit is slow spiral for smoother and cleaner drilling.
The counterbore is fully adjustable – supplied with a hex key.
Designed for use in softwoods, hardwoods, MDF, plywood, particle boards and plastics.
Not suitable for ferrous and non-ferrous metals.
When setting-up, ensure drill bit and counterbore flutes are aligned.
Specifications:
Counterbore Diameter (D): 9.5 mm / 3/8”
Pilot Diameter (D2): 4.76 mm / 3/16”
Overall Length (OL): 85.0mm
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