Features 1. High performances drill bit and tap combination set: This high-performances drill bit set allows for seamless drilling and tapping operations. Specially designed for maximum efficiency, helping you save time and effort in various projects 2. Titanium coating design: Each drill bit is coated with a titanium thin film, significantly improving durability and heat resistance, ensuring that the drill bit is sharp and efficient, and maintains excellent seven after long-term use 3. Unique thread cutting function: adopting innovative thread cutting design, accurately creating smooth and smooth threads without the need for additional tools or processes 4. Wide applicability: This drill bit set is compatible with various materials such as metal, wood, plastic, etc., meeting the needs of various application scenarios Specifications Material: High quality high-speed steel with titanium coating Size: 6mm, 8mm, 10mm, 12mm Package Include: 4PCS * Four-Edged Serrated Eccentric Drill