General description The 6pcs M3-M10 Hex Quick Change Screwdriver Drill Bit set is designed for efficient tapping and drilling. Made from high-speed steel with a nitride finish, these taps offer high hardness and rust resistance. The set includes six taps in sizes ranging from M3 to M10, allowing you to tap various threads with ease. Technical specifications Material: High-speed steel Finish: Nitride for enhanced hardness and rust resistance Sizes included: M3, M4, M5, M6, M8, M10 Usage Designed for drilling holes and cutting new threads simultaneously Provides a smooth tapping experience Best used with a machine for increased accuracy and reduced human error