Specification Name:New Four-Flute Sawtooth Eccentric Drill Bit Material: High quality high speed steel Size: 3mm,4mm, 5mm, 6mm, 8mm, 10mm, 12mm DESCRIPTION HIGH PERFORMANCE DRILL AND TAP COMBO: Drill and tap holes quickly with this high performance drill kit. Designed for maximum efficiency, it saves time and effort on all your projects! Titanium Coated Design: Each drill bit is coated with a titanium film that enhances durability and heat resistance, ensuring that the bit stays sharp and effective even after extended use UNIQUE THREAD CUTTING FUNCTION: The kit features a unique cutting thread design that provides clean, smooth threads with precision and reduces the need for additional tools or steps Wide range of compatibility: this drill kit is compatible with a variety of materials such as metal, wood and plastic, providing you with versatility for different applications Offers a wide range of size options: with a variety of size options, you can use the right drill bit for any task, large or small Product List 1* Multi-purpose Drill Bit Set