Guhring CNC Gun Drill, High Performance Standard Driver, Series: CoroMill® QD, Imperial, 1/4 in Drill Size - Fraction, 0.25 in Drill Size - Decimal Inch, 430 mm Overall Length, 50XD Cutting Depth, 1 Flutes, Straight Flute, 385 mm Flute Length, 8 mm Shank, Straight Shank, Type G Point, Right Hand Cutting, Solid Carbide Cutting Edge, Applicable Materials: Aluminum, Alloyed Steels, Free Cutting Steels, Tool Steels, Stainless Steels, Ti and Ti-Alloys, Cast Iron, Brass, Bronze, Copper, Magnesium, Special Alloys, Plastic and Hardened Steels, Solid Carbide, nano-A™ Coated