Precision Twist Drill Spotting Drill, General Purpose Standard Length, Series: DS-90, 1/4 in Dia, 2-1/2 in Overall Length, 1XD Cutting Depth, 2 Flutes, Spiral Flute, 1 in Flute Length, 1/4 in Shank, Straight Shank, 90 deg Point, Conventional Point, Right Hand Cutting, HM Cutting Edge, Carbide, Uncoated, Applicable Materials: Steel, Stainless Steel, Cast Iron, Titanium, Nickel, Copper, Aluminum Magnesium and Synthetic Materials