1. Hammer Drill 26MM BHD2603A: The power is the smallest, and the scope of use is limited to drilling wood and as an electric screwdriver. Some hand electric drills can be changed into special tools according to their purposes, with many uses and models.

2. Impact drill: The impact mechanism of the impact drill has two types: dog tooth type and ball type. The ball impact drill is composed of a moving plate, a fixed plate, and a steel ball. The moving plate is connected to the main shaft through threads, and has 12 steel balls; the fixed plate is fixed on the casing with pins and has 4 steel balls. Under the action of thrust, the 12 steel balls roll along the 4 steel balls. The cemented carbide drill bit produces rotary impact motion, which can drill holes on brittle materials such as bricks, blocks, and concrete. Take off the pin so that the fixed plate rotates with the moving plate without impact, which can be used as a common electric drill.

3. Hammer drill (electric hammer): It can drill holes in a variety of hard materials and has the widest range of use.

The prices of these three kinds of electric drills are arranged from low to high, and the functions are also increased. The selection needs to be combined with their respective scope of application and requirements.

Electric drill is a drilling tool that uses electricity as power. It is a conventional product in electric tools, and it is also the most demanded electric tool product. The annual production and sales volume accounts for 35% of China’s power tools. 

Cordless, brushless, and lithium-ion electric drills have become the main development trends of current electric drills, and are gradually changing to the direction of intelligence.