Arm services for operating rooms, of horizontal-radial movement, manufactured in special extrusion, 6065 temple 5 alloy aluminium profiles. Services head made of steel to carbon galvanizadocalibre 18 in finished baked electrostatic depintura. Gear turn-based arrows made of steel galvanized templadoenacabado and sealed bearings, mechanical friction brakes, with option to type electric brakes.