The DEWALT Extreme Step Drill Bit is produced for drilling and enlarging holes in metal. Suitable for construction steel, ferrous and non-ferrous metals, plastic, and thin walled materials up to 3mm. Optimized geometry helps to penetrate material faster, achieving precise drilling without walking. The titanium coating provides increased wear resistance, corrosion resistance and up to 2x life (vs black oxide). Ref: UTTK6923