DEWALT DT5921 Extreme Metal Drill Bit Set, 10 PieceDEWALT Extreme Metal Drill Bits are 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. The DEWALT DT5921 Extreme Metal Drill Bit Set is supplied in a plastic case, with the following