... , optional style&color An auger is a drilling device, or drill bit, that usually includes a rotating helical screw blade called ... turned, handheld device, or powered by an electric motor or internal-combustion engine, possibly attached to a tractor (being provided with power ... holes for garden plantingWe have many different kinds of ground drill bits, such as 40mm,60mm,80mm,100mm,150mm,200mm,250mm ...