The Bosch PRO Metal HSS-G Twist Drill Bits are a great choice for construction workers and installers who need long-lasting metal drill bits to drill in alloyed and unalloyed steel, non-ferrous metals, cast iron, plastics, and wood. They are made from premium high-speed steel. Ground for strength, resistance to heat, and precision. The split-point tip for starting holes is exactly where you need them.Select Option 16 x 120 x 178mm3.5 x 39 x 70mm Add to Basket Quantity