High-quality material: The deburring tools are made of tungsten steel, which has the characteristics of high strength, high hardness, excellent anti-rust and anti-corrosion performance, and long service life. The precision craftsmanship of our metal deburring tools allows you to achieve perfect results when deburring screws, pipes, and fittings. Installation is simple: simply attach the external countersink tool to your drill and apply light pressure to the screw head. Use a slow drilling speed and apply light pressure to remove burrs. Simplifies repairs without replacing expensive or hard-to-find hardware. The method is simple, easy to install, and suitable for various types of drill bits. EFFECTIVE REPAIR: This steel countersink tool is designed to repair damaged screws and fasteners. It can easily remove burrs from the outer edge of screws, quickly repair damaged bolts, and tighten nuts. Using a lubricant can further improve efficiency and make polished screws smoother and fuller. Safe and practical: Our external chamfer deburring tools have high strength and hardness, which not only ensures effective results but also guarantees your safety. External countersunk screws will not cause cuts, sparks, or burns to your hands during use. The removable deburrer can easily remove burrs and ensure a smooth, damage-free surface. Wide range of applications: The metal deburring tool is suitable for threaded pipes from 3 mm to 20 mm. The external chamfering tool can repair a variety of metals such as stainless steel, mild steel, hardened steel, copper, brass, fiberglass, aluminum, plastic, wood. The deburring tool with hexagonal handle is compact and portable, convenient for daily use and can be carried in a toolbox.