Drill Bits 23mm Tungsten Carbide Upgraded Version Higher Hardness Wood Hole Saw Auger Opener Woodworking Drilling Tool Wood Cutter

[Special Design] Compared with 2-flute drills 3-flute Foster bits have faster cutting speed and longer service life. Use these sharp bits. You can drill accurately. Smooth. The holes are neat and free of burrs. Even in telomeres and nodules. The curved curved design head helps remove wood chips faster. Make your work more efficient. [Material] The cutting edge is made of 3 pieces of K35 solid tungsten carbide. Hardness 91HRA. Bending strength 2200N/cm2. Can be resharpened for extended life. It has the advantage of high hardness. abrasion resistance. Good toughness. Heat resistance and corrosion resistance. The handle material is 45# steel. [Specifications] Drilling diameter: 40mm; Shank diameter: 9mm; Drilling depth: 60mm; Overall length: 90mm. [Note] 1. Contains sharp parts. Please keep away from children and pets. 2. Cannot be used for metal processing. Otherwise the drill will be damaged very quickly. 3. The material must be fixed when cutting. The drill bit should be perpendicular to the material. 4. Set a slow drilling speed until the drill bit is fully positioned. Then gradually increase the speed. 5. Water should be injected when processing hardwood. To improve drilling accuracy and quality.