For drilling gypsum boards, corrugated boards, slates, drilling thin steel plates and cans, for drilling cardboard papers, for streaking or cutting tin metal plates, penetrating type that allows the head to be hammed even on ice picks, with grips, Shaft Diameter 0.3 inches (8 mm) x Shaft Length 3.9 inches (100 mm) x Total Length 8.0 inches (203 mm) Shaft: Industrial Special Steel Handle: Special Steel Handle: Double molded soft resin