SUTTON TOOLS® D110-Series BLUE BULLET™ Long-Series Drill Bits offer longer overall and working lengths than traditional jobber drill bits. They are ideal for deep hole drilling or applications where a longer reach is required. The blue finish reduces chip build-up on the cutting edge and is a better choice when drilling ferrous metals. Features 118° Web Thinned Point - Reduces the amount of thrust (pressure) required, Precision Engineered Parallel Shank - For accurate hole size, Made from M2 High Speed Steel (HSS) - Offering the best combination of strength, heat and wear resistance, Blue Surface Finish - For ferrous metal applications. The steam oxide finish prevents chip build-up on the cutting edges and reduces cutting friction, especially in low carbon steels, Specifications Diameter: 3.0 mm, Working Length: 70 mm, Overall Length: 130 mm, Material: HSS, Finish: Blue, Point Angle: 118 degrees, Helix Angle: R30, Complies with following standards: ANSI B94-11 / DIN338,