- Length options: 3-12mm (Approx. 7.9cm/3.11 inches), 4-12mm (Approx. 6.7cm/2.64 inches), and 4-20mm (Approx. 7.4cm/2.91 inches). Each package includes 3 pieces. - Versatile cutting tool: Perfect for creating precise holes in a variety of materials such as steel, brass, wood, and plastic. - Superior performance: Heat-treated and highly polished to ensure perfectly round holes, enhancing accuracy and finish in your projects. - Innovative dual groove design: This feature enables faster, more consistent, and cleaner cuts. Each step is clearly marked with the depth diameter in increments for easy use. - Practical applications: - Ideal for DIY projects, such as crafting or home repairs, where precise hole cutting is essential. - Useful in professional settings, including carpentry and metalworking, ensuring high-quality results every time. - Great for hobbyists and professionals alike who require reliable tools for drilling through tough materials. - Reliable quality: Designed for durability and efficiency, making it an essential addition to your tool kit.