The Irwin Tools 63532 1/2-Inch Black Oxide 135-Degree-Jobber Length-Bulk - Pack of 6 is ideal for basic drilling applications in metal, wood and plastic. Constructed of M-2 high speed steel for the best combination of strength, heat resistance and wear resistance, this bit will get the job done quickly. The 135 degree split point ensures a true start and eliminates bit walking.