uptodateprouducts Sds Shank Concrete Wall Drill Bit Hole Saw Cutter, 400 Mm Connecting Rod (40mm bit with 400mm rod)

High-frequency welding technology, welding openings is very strong, smooth inside and outside welding mouth. * Materials that can be opened: cement wall, concrete wall, brick wall and so on for the installation of air conditioning, water pipes, water heaters, sewers, etc. *The surface of the hole opener is sandblasted and the waste is easily removed from the hole opener. * 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.