Features Premium 4241 High Speed Steel: Crafted from durable 4241 high speed steel, these drill bits ensure sharpness and longevity for all your drilling tasks Precision Drilling with High Concentricity: Designed for exceptional accuracy, the drill bits provide consistent results, making your projects more efficient and reliable Versatile 1/4in Shank Diameter: The 1/4in shank fits a variety of drilling rigs, allowing you to tackle different projects with ease and flexibility Ideal for Multiple Materials: This set excels in drilling through copper, brass, aluminum, and plastics, making it a perfect addition to your hand tools for various applications Comprehensive 6-Piece Set: Includes both 3 point wood drill bits and stubby drill bits, providing you with the right tools for woodworking and other drilling needs Features: 1、4241 HIGH SPEED STEEL MATERIAL: Drill bits are made of good quality 4241 high speed steel material, of sharpn and 2、HIGH CONCENTRICITY: The overall drill bit has high concentricity, and the drilling is more accurate, very practical 3、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 4、WIDE RANGE OF APPLICATIONS: HHS drill bit set is suitable for woodworking, etc. as a punching tool, has a wide range of applications 5、DRILLING COPPER, BRASS, ALUMINUM: Can be used for drilling holes in copper, brass, aluminum, thin metal plates and plastics, poss high performance Specification: Item Type: HHS Drill Bit Set Material: High speed steel Rod Length: Approx. 60mm / 2.36in Shank Diameter(in): 1/4 Twist Drill Tool Diameter(in): 3/32, 1/8, 3/16, 1/4, 5/16 3 Point Drill Tool Diameter(in): 3/32, 1/8, 3/16, 1/4, 5/16, 3/8 Package List: 6 x 3 Point Drill 5 x Twist Drill 1 x Rod 1 x Plastic Box Note: Take good safety protection when using. Package List 6 x 3 Point Drill 5 x Twist Drill 1 x Rod 1 x Plastic Box