Cordless drills make so many day-to-day tasks simpler. You don't even need to get one of the most powerful cordless drills ...

Back in the day, carpenters used brace-and-bit drills. For lighter jobs, manufacturers came up with a gear-driven model. More efficient and easier-to-use power drills tackle these jobs now ...

The difference is in how tool manufacturers measure their voltage. All 18-volt and 20-volt power tools use 20 volts of electricity to start up and a sustained 18 -volts of electricity while running.