Drilling tool of born since the times of the Neanderthal man (rail, 40000 years ago), Egyptians have to drill to make the trunk mummy. In the days of Caesar is using tools like drill at present to build accommodation and fortresses.Electric drill force drive motor rotates the drill. That are driving to drill, is a universal motor driver. A motor connected to the gear reducer motor speed down which makes the drill rotates slower than the motor.The drill will adjust the good series and direction. Can adjust the rotation of the drill from 10 round per minute, to 1000 rpm depending on usage drilling of various materials, such as wood, metal, plastic, the drill can also be connected to the accessory to work otherwise. Things, such as used to plate polishing, polishing pad,Grinding wheel, and a screwdriver too
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