General description The 6pcs HSS Drill Bit Set features a versatile combination of drill and tap capabilities, allowing you to drill, cut threads, and mill through various materials including wood, iron, and aluminum. The set includes 6 countersunk taps designed for efficient and precise operation. Technical specifications Material: High-Speed Steel (HSS) Shank type: 1/4' Hex Shank Sizes: M3 to M10 Usage Self-centering center point for accurate drilling No pre-drilling or drilling jig required Spiral cone design prevents thread damage from over-drilling Composite membrane allows for quick exchange of bits Suitable for angle drilling operations