[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. Built to last for long-term use.[Suitable for size] 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 sizes allow for greater application coverage on most bolts.[Six-point 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 plastics. Transforms rough edges into smooth, finished surfaces.[Beveling angle] Easily trims the outer edge of screws, bolts, pipes, or poles and removes burrs. Quickly repairs damaged bolts and secures nuts in place without hand injury. Simplifies the maintenance process.Color: Blue Material: Metal Package Contents: 2 x Chamfer tool Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1-3 cm.