Drill High Tensile Materials Like Stainless Steel Using A Power Drill, Drill Press, Or CNC MachineHeat Resistant Premium M42 Cobalt High Speed Steel Maintains Sharp Cutting At High TemperaturesSelf-Centering 135° Split Point For Precision Drilling- Drill Will Not WalkStraight ShankCobalt Drills Are Brittle And Can Break If Operator Forces ToolMade In USA