[1]: APPLY TO - The drill bit is suitable for daily equipment maintenance and repair, low-intensity applications, and medium to low-hardness metals, including thin stainless steel, steel, aluminum alloy, and copper. It is also effective for drilling wood and plastic materials, making it an excellent choice for various DIY projects around the home. [2]: SPECIFICATION - The drill bit has a cutting diameter of 30mm, a shank diameter of 1/2 , a total length of 150mm/5.91 inch, an flute length 75.5mm/2.97 inch, and a 118-degree point tip angle. [3]: INSTRUCTION - Set the suitable speed according to the material's hardness and the drill bit diameter. Higher speeds can be used for softer materials, while lower speeds should be applied for harder materials. Please refer to the details provided on the product page. [4]: ADVANTAGE - The 4341 high-speed steel material has high hardness, good wear resistance, and toughness, enabling it to withstand significant impact without easily breaking. Black and gold finish can further enhance the drill bit's wear and corrosion resistance, thereby extending its service life. [5]: QUANTITY INCLUDED - Set contains 1pcs x drill bit, perfect for home use, repairs, and small manufacturing projects. (Notice: it is recommended to first drill a small guide hole before drilling a larger hole) Brand Name METALLIXITY Shank Type 3-Flat Unit Count 1.0 Count Part Number mtf250425xt001085 Finish Types Nitriding Black Manufacturer METALLIXITY Material Type 4341 High-Speed Steel Tool Flute Type Spiral Included Components not_applicable