Revolving arm with full aluminum head ,304 stainless steel core and 25 mm 1.5 mm thick tube, suitable for internal diameters 45/56 and 60 mm. Contrary to the versions that are installed with a cap, it guarantees maximum strength, it is used on flagpoles up to 16 meters with 150X800 cm flags ! It is possible to turn it back to adapt it to smaller diameters.