Features: <br>1. High hardness, anti-rust, strong and durable, suitable for drilling, tapping and cutting of soft metals, aluminum plates, iron, etc. <br>2. Self-centering point, no need for auxiliary center drilling or center punching. <br>3. Drilling and tapping integrated, one-step processing, greatly saves processing steps and time costs, and improves work efficiency. <br> <br> <br>Specifications: <br>Material: High-speed Steel (HSS) <br>Suitable for soft metal, aluminum, iron <br>Size: <br>M3 x 0.5: Total length: 55mm, Spiral length: 24mm, drill diameter: 2.5mm <br>Handle: 6.35mm <br>(Notice: Manual measurement may be a little error please understand!) <br> <br>Package include: <br>1 x Hexagonal Handle Compound Tap Drill Bits<br>1、High hardness, anti?rust, strong and durable, suitable for drilling, tapping and cutting of soft metals, aluminum plates, iron, etc. <br>2、Self-centering point, no need for auxiliary center drilling or center punching. <br>3、Drilling and tapping integrated, one?step processing, greatly saves processing steps and time costs, and improves work efficiency. <br>4、This tap drill set has a unique design, at the same time drilling, tapping and chamfering. <br>5、Accurate ground point, flutes, body, clearance, and drill diameters for the best accuracy and performance.