Milwaukee® Jobber Length Twist Drill Bit, Series: Thunderbolt® RED HELIX™, Imperial, 9/64 in Drill - Fraction, 0.1406 in Drill - Decimal Inch, 2.91 in Overall Length, 1-3/4 in Cutting Depth, Parabolic Flute, 1-3/4 in Flute Length, 3/8 in Shank, Round Shank, 135 deg Point, Split Point, Right Hand Cutting Direction, Steel Cutting Edge, Steel, Cobalt, Applicable Materials: Metal, Plastic, PVC, Stainless Steel and Wood