4241 HIGH SPEED STEEL MATERIAL: Drill bits are made of good quality 4241 high speed steel material, of sharpness and durable
HIGH CONCENTRICITY: The overall drill bit has high concentricity, and the drilling is more accurate, very practical
1/4IN SHANK DIAMETER: 1/4in shank diameter is suitable for a variety of drilling rigs, and a variety of tool diameters can meet a variety of needs
WIDE RANGE OF APPLICATIONS: HHS drill bit set is suitable for woodworking, etc. as a punching tool, has a wide range of applications
DRILLING COPPER, BRASS, ALUMINUM: Can be used for drilling holes in copper, brass, aluminum, thin metal plates and plastics, possess high performance