Articulated arm with  xed  first section and 2 mobile sections for distributing electrical energy, compressed air and extracting dry sanding dust. The triplex arm is equipped with 3 TMS service control units in order to provide all the services for 2 preparation areas (up to 4 in limited format). The arm is manufactured entirely with steel ducts, and its preformed curves and  exible joints make it highly ergonomic and guarantee a long working life. The only one of its kind, TRIPLEX offers design, functionality and a large range of features in a single product.