- Self-feeding screw point for faster boring into all types of wood
- Mathieson-type twist for drilling in hard woods
- Forged SAE 1060 steel, austemper heat-treated and coated with anti-corrosive oil for longer life
- Hex shank prevents bit from slipping in chuck
Irwin Scotch Pattern Auger Bits are have a full-length heat treated bit which guards against bending in heavy-duty applications and strengthens the twist where the greatest strain occurs.
They are also coated with an anti-corrosive oil to increase life and the Mathieson-type twist enables the bit to drill into hard woods