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                              Tenn 600W & 800W 
                               To produce a hole; a solid carbide drill bit has to remove a large volume of material. By comparison, Tenn rotary hammer core hits get the job done more quickly and economically as they need only cut along the periphery to make a hole. This makes it possible to drill large diameter with small handheld rotary hammers, thus saving on tool costs. 
                                   
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