Abstract: A control arm system, whose first support bar is passed through by a vertical post, enabling the first support bar to swivel round horizontally by any angle, the far end of the first support bar carrying a vertical rod, which in turn passes through a first link support to enable the first link support to swivel around the far end of the first support bar horizontally; while the first link support is further provided with two bolts that are mounted vertically above each other, pointing in a horizontal direction, and which serve to hold a second support bar, made of two parallel link bars of equal length, in a way that it is movable up and down with the two bolts as cardinal points, the far end of the second support bar in turn being connected to a second link support, which holds a rotary tool, being held by two bolts mounted vertically above each other, pointing in a horizontal direction, where the distance between the two bolts of the second link support and the two bolts of the first link support is equal;