Enhance Your Workflow: Drill and tap in a motion for maximum efficiency and precision. Save time and effort on all your projects with this high-performance bit, perfect for professional contractors and craft enthusiasts. With high-speed steel construction and a titanium coating, this eccentric drill bit set ensures long-lasting effectiveness and enhanced durability. Effortless Cutting Performance: Say goodbye to extra tools or steps while enjoying unique thread cutting capabilities, resulting in cleaner, smoother threads. Wide Adaptability for Drilling: With the ability to drill through various materials such as metals, wood and more, this eccentric drill bit set provides wide compatibility and versatility for multiple applications, providing you with a different standard of drilling experience. Multiple purchasing options: Our eccentric drill bit set provides various sizes to choose from, such as 4mm, 5mm, 6mm, 8mm, 10mm, and 12mm, with multiple purchasing options to cater to your unique needs. With unique thread cutting capabilities, these bits can adapt to a variety of materials, including metals, wood, and more. Product material: high speed steel, titanium coating. Product size: 4mm/0.15in, 5mm/0.19in, 6mm/0.23in, 8mm/0.31in, 10mm/0.39in, 12mm/0.47in.