Auniwaig 5pcs HSS Twist Double End Drill Bits, HSS Cobalt Full Grinding Twist, Straight Shank Spiral Rotary Tool for Cutting Metals

Auniwaig Straight Shank HSS Twist Double End Drill BitsPackage Content:5pcs x Double End Drill BitsSpecification:Product Name: Double End Drill BitsMaterial: HSS Fully Ground with CobaltBit Dia: 4.2mm / 0.17-inchShank Diameter: 4.2mm / 0.17-inchDouble Flute Length:15mm/0.59-inchBit Length:56mm/2.2-inchSurface Treatment: Roasted Yellow ProcessDescription:1.This product is made of high speed steel material,Smooth surface finish, long service life.2.Made with cobalt high speed steel, these bits are not only extra strong but heat and wear resistant.3.With two ends, these bits will last twice as long before they need to be resharpened.4.Straight shank design is more suitable for many electric drills (here is not included).5.Particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too.6.Please keep cool and gentle using, the working life of the twist drill bits can be largely prolonged by proper usage.7.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color shown on the pictures.

• 【Material】- Made of high quality HSS material, cobalt high speed steel to ensure the double end drill bits strong, good wear resistance and double life-time compared with other drill bits
• 【Flute Figures】- Efficient helix flute design to keep the quickest removal of chips and debris through flute during penetration of workpiece
• 【Advantage】- Double ended sides prolong tool life and increases the amount of service by two before resharpening bit
• 【Application】- Applicable for variety of material drilling, such as stainless steel, steel, metal, iron, cast iron, copper alloy, aluminum, plastic
• 【Dimension】- The bit diameter of this double end HSS cobalt twist drill bit is 4.2mm / 0.17-inch;Double Flute Length:15mm/0.59-inch