Wall Hole Saw Carbide Steel SDS Plus Shank 35mm 45mm 55mm Drill Bit Set 200mm Connecting Rod Wall Drill Brick Stone Concrete Cement

* 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

• Material: Chrome Vanadium Steel
• Widely used for installing the Air Conditioner, Oil Fume Exhauster and Sewer Pipeline Hole Open ect. Mainly work on the Opening Hole Operation of Wall and Brick structure, such as Red brick and Cement.
• High-frequency welding technology, welding openings is very strong, smooth inside and outside welding mouth.
• Pay attention to coolant when operating.
• Packing specification: 1x long connecting rods + ( 35mm / 1.37" drill bit ) + ( 45mm / 1.77" drill bit ) + ( 55mm / 2.16 drill bit ) + 1x Center positioning guide + positioning drill screw.