It is suitable in turning on lathe digs the drilling machine to sneak in the close clay, the dense granulated substance pebbles level, is suitable specially for the mantle rock construction. The single-thread auger sneaks in the leading role is stirs disperses, divides makes the straight screw and the awl screw two broad headings. The straight screw is suitable in the soil layer sneaks in takes the earth, drills the screw to use in the granulated substance pebbles and the rock layer stirs disperses and sneaks, the taper is smaller can provide the good bit pressure. The single-thread auger only then the unilateral screw blade, can transmit smoothly the drilling machine torque on the construction level, its vertical spacing is bigger than 300mm.

It is suitable for Bauer Germany or Sany Drilling machines!!