* Note: In the process of punching hole, Suggested that adding water cooling to help to extend the service life of the product.
* High-frequency welding technology, welding openings is very strong, smooth inside and outside welding mouth.
* Using the Electric Hammer of the impact + rotation function on the Wall, Hollow Brick to operate Air Conditioning Holes, Pipe Holes and so on.
* Simple operation, easy to use,and fast perforated.
* Package include:
1x long connecting rods
1x 35mm / 1.37" drill bit
1x 45mm / 1.77" drill bit
1x 55mm / 2.16 drill bit
1x Center positioning guide
1x positioning drill screw