High-quality single-edged auger bit with specially ground roof tip and very dimensionally stable spiral design, high-quality coating for minimum friction, for low-crack drilling of all softwoods on joinery systems, very good fit of rod dowels due to minimum tolerance of the drill diameter, Particularly suitable for drilling planed or finished glulam beams thanks to the special head geometry, drill hole entry and exit with significantly fewer tear-outs than conventional auger bits, only suitable for use on joinery machines, no freehand operation possible