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DescriptionVersatile: This set includes 6 pieces of drill tap combination bits, covering metric thread sizes M3, M4, M5, M6, M8, and M10, making it suitable for a wide range of projects.Time-saving: With the drill tap combination design, you can drill, tap, and countersink in one step, saving you time and effort.Durable: Made of high-speed steel with a titanium coating, these bits are durable and can withstand heavy-duty use.Easy to use: The 1/4" hex shank allows for quick and easy bit changes, and the tapered drill bit design ensures a smooth drilling experience.Precise: The screw tapping feature ensures precise threading, making it perfect for DIY projects, woodworking, metalworking, and more.