Drilling Purpose Earth Auger usually includes a rotating helical screw blade to act as a screw conveyor to remove the drilled out material. The Earth Auger is used for digging post holes and the rotation of the blade causes the material to move out of the hole being drilled. The Earth Auger can be a manually turned, handheld device or powered by an electric motor or internal-combustion engine, possibly attached to a tractor. Drilling Purpose Earth Auger is suitable for various industrial applications.