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The 6 Piece Thread Tap Drill Bits Set is the best set you can have to complete your tools in hole drilling, tapping, deburring, and countersinking in one operation. It will also improve working efficiency. It will give you time to save in processing steps and it is cost-effective.
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. The thread drilled is very stable because it's made of high-quality HSS rustproof, solid, and durable. It is back tapered beyond tap to prevent thread damage from over-drilling
The thread drills are applicable to some types of carbon steel and ordinary steel, copper, and aluminum-magnesium alloy drilling hole. Six different sizes of drill bits can help you get different sized holes. It has a high-quality hex shank to ensure a strong connection to the drill chuck.
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