Forstner Drill Bit 20Mm (3/4") Carbide Adjust Depth Wood Drill Bits A Wrench

1. The forstner bit is made of tungsten carbide, which has high strength, hardness, wear resistance, and heat resistance. The painted surface can improve rust and corrosion resistance.2. The spike design helps guide the drill bit through the wood accurately, prevents slipping, and ensures the accurate position of the starting hole. The 2 flutes, 3 spurs and arc curve design on the head make the cutting resistance smaller, improve the perforation efficiency, and can clear the debris faster, making your work more efficient.3. The heat-treated drill bit can be repeatedly sharpened for a longer service life, and can achieve neat, smooth, burr-free holes.4. Metric forstner bit sets are suitable for opening holes in solid wood, cork, hardwood, plywood, medium-density fiberboard, particleboard, as well as plastics, rubber and other materials. The standard shank diameter can be applied to handheld drills, drilling machines, bench drills, vertical drills, CNC engraving machines, etc.5. It cannot be used for metal processing. The material must be fixed when cutting, and the drill bit should be perpendicular to the material. When processing hardwood, water, oil or lubricant can be used to improve drilling accuracy and quality.