General description Made of 4341 High Speed Steel (HSS), this Piece Drill HSS Hexagon Shank set offers high hardness and rust resistance for a longer service life. The set includes 6 sizes: M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, and M10x1.5, perfectly meeting various drilling needs. The sharp, induction-hardened drill bits are designed to resist wear, ensuring efficient piercing and improved work efficiency. Technical specifications Material: 4341 High Speed Steel (HSS) Sizes included: M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5 Usage Suitable for drilling wood, plastic, thin copper, aluminum, and other soft metals (5-6mm) Not suitable for hard materials (such as steel sheet) Inject water while drilling to cool the drill bit If cooling is not possible, reduce drilling speed and frequency