Specifications: Material: High-speed Steel (HSS) Suitable for soft metal, aluminum, iron Size: M10 x 1.5: Total length: 59mm, Spiral length: 20mm, Drill diameter: 8.5mm Handle: 6.35mm (Notice: Manual measurement may have slight variation; please understand) Package includes: 1 x Hexagonal Handle Compound Tap Drill Bit High hardness, rust-resistant, strong and durable, suitable for drilling, tapping and cutting of soft metals, aluminum plates, iron, etc. Self-centering point, no need for auxiliary center drilling or center punching. Drilling and tapping integrated, one-step processing, saves processing steps and time, improves work efficiency. Unique design allows simultaneous drilling, tapping and chamfering. Precisely ground point, flutes, body, clearance, and drill diameters for optimal accuracy and performance.