 They carried enough fuel oil to give them a range of at a speed of .Their main battery consisted of four 50-caliber Cannone da /50 A Modello 1926 guns in two twin-gun turrets, one each fore and aft of the superstructure.Anti-aircraft (AA) defense for the "Folgore"-class ships was provided by a pair of 39-caliber Cannone da /39 AA guns in single mounts amidships and a pair of twin-gun mounts for Breda Modello 1931 machine guns.