Electric external vibrators suitable for large and small projects on building sites or in concrete factories. Our program distinguishes various types of ETR electric external vibrators with feet mounting and ETRS electric external vibrators with rapid coupling connection.  For ETR as well as ETRS, we offer a total package of electronic frequency variators for adjusting the speed somewhere between  0 – 3.600 rotations per minutes. On request we also offer complete switchboxes, with thermical overload relais and control lights, for connecting several vibrators.