기능

• Stable perforation is possible with little catch or impact due to perforation. Even if you use it for a long time, it reduces the strain on your body and reduces fatigue.
• Hole-drilling close to a circle is realized.
• Improved positioning performance.
• Improved safety when contacting reinforcing bars. (Reduces swinging by electric motor)
• Penetrate through deck plate.
• Less outer diameter wear.