Drill America D/ACT29/64 29/64" Carbide Tipped Jobber Length Drill Bit, D/ACT29/64Drill America D ACT29 64 29 64" Carbide Tipped Jobber Length Drill Bit, D ACT29 64 Carbide tipped jobber drills. Features heavy duty construction and heat treated body for optimum wear resistance and support of the carbide tip. Used in the production of cast iron, non ferrous metals, and many composite materials such as hard rubber or copper alloys. NOT recommended for drilling steel. Size: 29 64, Material: Carbide Tipped, Finish: Uncoated (Bright),