Features: Having strong cutting ability, it can quickly and efficiently drill holes on various metal materials, saving construction time. Alloy material has high hardness and wear resistance, ensuring that the drill bit remain sharpness during long-term use and extending its service life. Professional design ensures accurate punching positions, meets engineering requirements, and avoids material waste caused by inaccurate punching. Can be used for various metal materials, such as aluminum buckle plates, stainless steel, light steel keel, etc., with strong adaptability and meeting different construction needs. Suitable for most power tool on the market, easy to install and replace, simplifies the operation process, and improves work efficiency. The small size is convenient to carry, suitable for construction site operations and home DIY projects, and can meet drilling needs. Specifications: Material: Cemented Carbide Length:Approx.98mm/3.86'' Diameter: 14mm,15mm,16mm,18mm,19mm,20mm,30mm,40mm,45mm Product usage: stainless steel plate/aluminum alloy iron plate/thick steel plate and other holes Package Includes: 1Piece Drill Bit note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.