What kind of electric drill can drill through walls and drill iron?
Classification and use of power tools of this type:1, ordinary drill: iron, wood, plastic and other drilling;
Percussion drill: general impact drills are dual purpose. First, the function of the ordinary electric drill, two is adjusted to hammer, punching function, put on alloy drill, you can drill in the wall, but drilling ability is poor;
Electric shock, rotation, and hammer is different single hammer, but the hammering force is its strength. Hammer hit is out of the hole, and the hammer is empty irregular.
Hammer: single wall drilling tool. Compared with the percussive drill, it is much higher than the impact drill;
