Drill can be divided into 3 categories: hand drill, impact drill, hammer drill.
1. Hand Electric Drill: the least power, the scope of use is limited to drilling wood and as an electric screwdriver, not too much practical value.
2. Impact Drill: Impact of the percussive drill has two types of canine and ball type.
3. Hammer Drill (Electric hammer): Can drill holes in any material, the use of the widest range.
These 3 kinds of electric drill prices from low to high, the function also increases, the choice needs to combine the respective scope of application and requirements.
Main Classification Of Electric Drills
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