Rocks, roots, or a weak impact wrench we recommend a corded ftlbs DeWalt may prevent you from driving the auger fully into the soil. 포인트 소켓은 드라이버 헤드가 벗겨질 수 있으므로 포인트 소켓만 사용하세요. So if you want to test your soil first, this is an inexpensive way to do so.