- Smooth Drilling: Achieve fast and smooth drilling across various materials, including steel sheets, aluminum sheets, wooden boards, and plastic. Enjoy accurate and efficient results every time you use this drill bit set. - High-Speed Steel Construction: Made from high-speed steel with a titanium nitride coating, these drill bits offer superior strength. The coating reduces friction, resulting in less heat during use and extending the life of each bit. - Comprehensive Set with Storage Box: This set includes three step machine drill bits (sizes 4-12mm, 4-20mm, 4-32mm) and three HSS twist drill bits (sizes 3mm, 6mm, 8mm), all stored in a portable plastic box. Keep your tools organized and easily accessible, reducing the risk of loss or damage. - Wide Applications: Ideal for a range of projects, including sheet metal work, sink installations, and automotive contacts. This stepper machine set cuts through materials like boards, aluminum, insulation, and PVC panels, offering you unmatched versatility. Use Scenarios: 1. Perfect for DIY home improvement projects where precision drilling is required for mounting fixtures or assembling furniture. 2. Essential for automotive repairs, allowing you to drill through various materials efficiently while ensuring clean cuts. 3. Useful in construction or renovation work, enabling quick and easy installation of electrical fixtures or plumbing systems.