Drills with safety switch

Power button lock

— the ability to lock the power button in the pressed position — usually with the help of an additional button located nearby (or even on the start key itself). This function is very convenient in situations where the tool has to be used for a long time without interruption — for example, when drilling several dozen holes at once: it is easier to fix the start button in the on position than to keep it pressed all the time, additionally straining the finger on the working hand. And the lock is turned off, usually, in the simplest way — for example, by briefly pressing the same start button.