Bits drill through nails, wood, vinyl, plastics, and heavy timber.
Special bit steel with machine-ground flutes and polished edges for smooth, wobble-free boring.
Head and twist are ground to correct clearance for easy removal from hole.
Feed-screw pilot draws bit into wood.
Full length is heat-treated and tempered.
For heavy construction and repair work in mines, on docks and bridges as well as electrical work.