Basically there are 2 types of handheld drills in the market you may consider. Power wise it can be direct plug, or use battery. 1. The one mainly used for tighten screws, can adjust strengths. When it adjusted to maximum, it can drill. Please don’t expect much on this type, it’s mainly for screwing, power average 400w. This is sufficient, especially for quick tighten and losing to change drill bit. Just an example, not recommending any brand, or model etc. 2. The one has a switch, changing only from screwing and hammer drilling. power average 650w. You can use this for screwing but not easy to control and screwed up. It’s good for drilling holes on concrete household. Just an example, not recommending any brand, or model etc.