I bought it at the same time as tap and dice set. Until now, in order to remove broken screws, I purchased a few drill blades myself and worked with impact, but speed control was difficult, and each time I made a drill blade with bolt thickness etc. I bought it according to and was troublesome. Although I have not used the drill set that I purchased this time, I can attach it to the impact attachment and use it, because I can also slowly puncture with manual handwheel, I feel a sense of security just by having one set. I am satisfied that I will try to use it also for a do-it-yourself carpenter attached to the impact.