Especially for loading and unloading systems for tanker trucks for industrial fuels and liquids. It allows work to be carried out directly on the road surface instead of having to get into the vehicle, thus avoiding the build-up of electrostatic charges. The Type HA loading arm can be equipped with a Gassoflex hose, which gives it excellent maneuverability, and with the Gassó API RP 1005 coupling. Suitable for the vapor recovery phase. The balancing system allows a maximum angle, with respect to the horizontal axis, of +20° upwards and -20° downwards and can withstand considerable moments.