How to get power tools to work in Eastern Europe?
For AC induction motors the speed depends on the frequency, so even if they worked they would be 17% slower than the rated speed. Then again, those tend to be the kind of motors used in fans and things with constant speed, and not hand tools that use universal motors, which I believe do not depend on frequency at all. However if you put 220V to a universal motor whose windings were designed for 110V you would certainly fry them. The kinds of devices that can support a wide range of voltages/frequencies with only a change in plug are not typically motors but electronics that use switch-mode voltage regulation, such as cell phone chargers or computer power supplies. On the other hand, if you get a cordless drill, there is a very high chance that the charger would be such a switchmode circuit and would support any voltage and frequency. In any case just defer to the specifications stamped on the unit itself, which should be definitive as to whether this will work or not.