DescriptionCombination drill, no more using a drill to drill the hole and thentapping it out later with another tool. All in one and works great andsave a lot of time and trouble. These taps are designed with spiralflutes and the chip clearing process would be better.Features- Color: Golden - Material: High-speed steel- Size: About 7.00X1.00X1.00cm/2.75X0.39X0.39in - Made of high steel (HSS), with high hardness and rust resistance, long service life. - 6 sizes, fully meet your different needs. induction quenching drill, resistant to slight wear, toensure puncture speed, improve work efficiency. - Saving processing steps and time costs, improve work efficiency. - Do not apply to hard materials such as steel plates. - When drilling, water needs to be injected at the same time to cool the bit.
