Cutting Hardness: HRC67-70, Drill Bit Diameter: 9.3mm / 0.37-inch, Flute Length: 80mm / 3.15-inch, Shank Diameter: 9.3mm / 0.37-inch, Total Length: 125mm / 4.92-inch; 1 x M42 High Speed Steel Twist Drill Bit M42 steel is high cobalt high-speed steel.
Cutting Hardness: HRC67-70, Drill Bit Diameter: 9.3mm / 0.37-inch, Flute Length: 80mm / 3.15-inch, Shank Diameter: 9.3mm / 0.37-inch, Total Length: 125mm / 4.92-inch; 1 x M42 High Speed Steel Twist Drill Bit M42 steel is high cobalt high-speed steel.