Smart 6 Pcs M3-M10 Hex Shank Thread Tap Drill Bits

One of the best tools at this moment! Drill, tap, and deburr in one operation This drill and tap bit set is made of high-speed steel, hardness, rustproof, solid, and durable. Suitable for drilling, tapping, and cutting on various strong materials.   Exquisite workmanship - Durable taps are made of high-speed steel, which can ensure sharp, fast execution and retain strength and efficiency. The surface is treated with a titanium alloy, which greatly improves the cutting performance of the drill, is more wear-resistant, and prolongs the service life.   Ergonomic design - The product portfolio includes imperial /metric /American sizes, so it has high versatility. Each tap drill is engraved with a label, which is convenient for you to choose the size that suits you. The convenient ¼-inch (6.35mm) hex shank has a tapered end to prevent excessive knocks. Back taper exceeds the tap to prevent over-drilling and damage to the thread.   High efficiency - They are taps with drilling function,