Milwaukee RED HELIX Jobber Length Twist Drill Bit, Imperial, 1/2 in Drill - Fraction, 0.5 in Drill - Decimal Inch, 5.12 in Overall Length, 4-1/2 in Cutting Depth, Parabolic Flute, 4-1/2 in Flute Length, 3/8 in Shank, 3-Flat/Reduced Shank, 135 deg Point, Split Point, Right Hand Cutting Direction, Steel Cutting Edge, Steel, Uncoated, Applicable Materials: Hard Metal, Plastic, PVC, Stainless Steel and Wood