The HERTZ Vibrators are powerful and reliable tools which guarantee a considerable power changeable by means of an electronic circuit. The change of intensity of the vibration is obtained by rotating the knob located on the front panel. They are built and assembled in accordance with the safety rules (protection fuse, standard schuko plug, green light switch). They are supplied with a rubber removable plane, which can be easly removed to ease the cleaning process which canalso be done with steam, thanks to the high termic and mechanical resistance of the materials. These vibrators are noise-free and guarantee a high steadiness by means of a perfect vertical movement and thanks to the four little holdfast feet which allow a perfect ahdesion to any type of surface.