Electric hammer is mostly used for drilling holes in hard building materials such as concrete and masonry. It has high power and strong processing ability. Electric picks are mainly used to break concrete, bricks, stones, ice and so on. The pickaxe has no rotating function, it only has the impact function, and the impact energy is relatively large. Electric drills are mainly used for drilling holes in metal or plastic, wood and other materials, and for long holes in mines. They are small in size, easy to carry, but with low power.