hollow hole saw Hollow Electric Hammer Drill

About Product:Hard alloy walls open hole is made of high quality alloy welding and, for the brick structure of the building open hole operations, by guiding drill, with special connecting rod and connected to different pages handle part structure of electric hammer drilling, installation, decoration industry new tools; hammer drill hollow connecting rod, according to the front page of the handle part structure selection, length according to the user need to decide, excellent quality, quality products.