6 Piece Metric Thread Tap Drill Bits Set

6 PIECE METRIC THREAD TAP DRILL BITS SET Complete Hole Drilling, Tapping And Deburring/Countersinking In One Operation With Power Drill.  It Saves Labor, Time. The thread drilled by the drill is very reliable. Even if you do not use an electric drill, you can easily screw in the screws just by hand, saving a lot of work time.    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. Features: 【 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