- Versatile application: Ideal for drilling and machining tasks, compatible with built-in drills, milling machines, and more. - High-quality material: Constructed from durable alloy steel for enhanced strength and longevity. - Size options: Available in a wide range of diameters including 6-6.5mm, 6.5-7mm, 7-7.75mm, 7.75-8.5mm, 8.5-9.25mm, 9.25-10mm, 10-10.75mm, 10.75-11.75mm, 11.75-12.75mm, 12.75-13.75mm, 13.75-15.25mm, 15.25-17mm, 17-19mm, 19-21mm, 21-23mm, 23-26mm, 26-29.5mm, 29.5-33.5mm, 33.5-38mm, 38-44mm, 44-54mm, and 54-64mm. - Enhanced performance: Designed for precision and efficiency in various machining applications. Use scenarios: 1. Perfect for professional machinists who require reliable tools for high-speed drilling tasks. 2. Great for DIY enthusiasts looking to upgrade their home workshop with durable drilling solutions. 3. Suitable for industries such as automotive and aerospace, where precision and reliability are crucial.