2 Pieces Drill Bit 20mm Diameter 129mm (5\") Long Tungsten Carbide Twist Wood Drill Bits, Hole Saw, Auger Opener, Cutter for Wood Drilling

Size - Drilling diameter: 20mm; stem size: 17mm; ; total length: 129mm / 5"; shank type: hex shank.Material - The woodworking drilling tool is made of tungsten carbide, which has high strength, hardness, wear resistance and heat resistance. Painted surface can improve rust and corrosion resistance. The heat-treated drill bit is durable, sharper, and can dig neat, smooth, burr-free holes..Features - The pin design ensures that the drill bit accurately penetrates the wood, effectively prevents slippage, and accurately locates the drilling hole, improving the precision of the operation.The three-tooth arc curve design on the head reduces cutting resistance and debris more quickly, achieving higher working efficiency..Applications - Suitable for opening holes in solid wood, cork, hardwood, plywood, medium density fiberboard, particle board, as well as plastics, rubber and other materials. Drill bits can be used with portable drills, drill presses, drill presses, vertical drills, CNC engraving machines, etc.Notes - Wood bits cannot be used for metal shaping. The material must be fixed when cutting, and the bit must be perpendicular to the material. When shaping hardwood, water, oil or lubricant can be used to improve drilling accuracy and quality.