New Four-flute Sawtooth Eccentric drill bit: With a unique cutting thread design, this four-edge serrated eccentric drill provides clean, smooth threading accuracy Titanium-Coated Design: Each drill bit is coated with a titanium film that enhances durability and heat resistance, ensuring that the bits remain sharp and effective, even after extended use High-Performance Drill and Tap Combination: Get drilling and tapping done in one swift motion with this high-performance drill bit set. Designed for maximum efficiency, it saves you time and effort on all your projects Multiple Sizes:Available in a variety of sizes, this multifunction drill bit set ensures you have the perfect tool for any job, whether it's a major project or a quick fix Wide Compatibility: This set of drill bits is suitable for a variety of materials, including metal, wood and plastic, giving you versatility across different applications