The DEWALT Extreme 2 Metal Drill Bit is suitable for portable or stationary drilling of steel, alloyed and non-alloyed, up to 900N/mm. Particularly suited to drilling sheet or thin materials where accurate burr-free holes are required. Very effective in wood and plastic materials. The patented split pilot point design eliminates walking/slipping on contact. This DEWALT Extreme 2 Metal Drill Bit has the following specification Tip Diameter 4.2mm. Working Length 43mm. Overall Length 75mm. Pack Quantity 10.