Black & Decker 1161 is a variable-speed drill, enabling the user to adjust the speed of rotation depending on the material being drilled into, as well as the type of drill bit used. The device also features a trigger switch that allows for continuous operation, useful for prolonged drilling tasks or when utilizing a vertical stand. Furthermore, the drill is equipped with a locking button, which can be engaged to keep the trigger in the "ON" position, freeing up the user's hand for other tasks.