Cordless tools/machines are suited to a variety of different situations, as you are not limited to only working in places with power sources nearby.
The height represents the vertical dimension of the product. We consider a smaller height better because it assures easy maneuverability.
We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
Drills with LED light provide a constant light source.
The width represents the horizontal dimension of the product. We consider a smaller width better because it assures easy maneuverability.
A drill with a pistol grip handle is usually compact and lightweight, making the tool suitable for a large variety of apps and easy to use.