17-inch overall length. Single cutter & side lip effortlessly bores holes in wood where nails may be encountered. Cuts through nails without damaging the bit. Full-length heat treatment guards against bending in heavy duty applications. Strengthens the twist where the greatest strain occurs. Hollow center flutes clear the chips quickly out of the holes. Wide lands help keep bit straight as it bores. Medium fast screw point ideal for general wood boring applications. Bit can be re-sharpened.