Irwin® Jobber Length Drill Bit, Heavy Duty, Imperial, 1 Flutes, Spiral Flute, Straight Shank, 135° Point, Split Point, Right Hand Cutting Direction, No Through Coolant, Applicable Materials: Aluminum, Brass, Cast Iron, Copper, High Alloy Steel, Low Carbon, Mild Steel, Plastic, Sheet Metal, Stainless Steel and Wood/Drywall