A universal jet bar for the spraying or the spreading of granules or liquid conventionally including two arms articulated and each provided with a plurality of segments capable of being folded onto themselves, each segment including at least one lower profile defining a longitudinal housing open downwards and at each of its longitudinal ends, the universal jet bar receiving spraying equipment, remarkable in that it includes a plurality of premounting members capable, on the one hand, of supporting the spraying equipment and, on the other hand, of being inserted into the housing and removably rigidly connected onto the lower profile along the arms, the lower profile and housing being configured to entirely receive the premounting members and the spraying equipment.
