The advantages, disadvantages and applicable conditions of drilling with holes and electric drills
An electric drill is an ordinary drill, but it is suitable for all kinds of materials, such as wood, aluminum, steel, concrete and so on. Accordingly, the drill bit needs to be well matched and convenient to carry!
The drill needs water to cool the drill bit, and the drill is hollow, but it has a very large bore. It is used mainly on walls and on the ground.
