Suitable for drilling, tapping, cutting, deburring and countersinking in wood, soft metals, thin aluminum plates (5-6 mm), iron, etc. Note: When drilling a hole, you should inject water at the same time to cool the drill bit. This will help you add value to the drills. If you cannot cool the drill bit while drilling holes, the drilling speed should not be too high and you should not drill holes too often. Drilling and tapping in one-step processing, save a lot of work steps and time, improve work efficiency. Self-centering point, does not need assisted center drilling or center punching. There are a total of 6 taps in different sizes from M3 to M10, which you can use to tap various threads. These taps are made of high-speed steel, and the surface is nitriding treated to achieve a high level of hardness and rust resistance. ? The drill bits increase work efficiency because drilling and tapping can be completed in one pass. ? These HSS drills and taps are excellent tools for creating