Milwaukee® Jobber Length Twist Drill Bit, Series: Thunderbolt® RED HELIX™, Imperial, 7/16 in Drill - Fraction, 0.4375 in Drill - Decimal Inch, 5.12 in Overall Length, 4-1/16 in Cutting Depth, Parabolic Flute, 4-1/16 in Flute Length, 3/8 in Shank, 3-Flat/Reduced Shank, 135 deg Point, Split Point, Right Hand Cutting Direction, Steel Cutting Edge, Steel, Cobalt, Applicable Materials: Metal, Plastic, PVC, Stainless Steel and Wood