[High-quality tungsten carbide blade] Made of high-hardness metal with high strength, high hardness, and durability. The hard alloy blade offers rust-proof and anti-corrosive performance. Hard alloy knives provide higher cutting efficiency and hardness compared to ordinary high-speed steel tools. Designed for long-lasting use. [Suitable for various sizes] The drill bit operates at 0-400 RPM, suitable for round blank materials, rods, screws, and bolts ranging from 1/8 inch (3mm) to 3/4 inch (20mm). Larger diameters allow for greater application range on most bolts. [Six-end quick release design] Hexagonal handle features a quick-release design compatible with most drills. Begin at the lowest speed, apply gentle pressure to remove burrs, and increase speed as needed. [No defective edge] Effectively repairs damaged bolts and tightens nuts on various materials such as soft steel, copper, brass, wood, fiberglass, and hard plastic. Transforms rough edges into smooth, finished surfaces. [Beveling angle] Easily chamfers the outer edge of screws, bolts, pipes, or poles and removes burrs. Quickly restores damaged bolt threads and secures nuts in place without hand injury. Simplifies maintenance tasks. Color: Blue Material: Metal Package Contents: 2 x Chamfer tool Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement error allowed is +/- 1-3 cm.