Easy mounting on tractors with hydraulic system on 3 point linkage, with type I and type II trunnions, and chassis of high resistance steel. The disc ploughs are provided with a hydraulic reversal and adjustment unit, that allows changing the working angle of the discs. The smooth discs of high resistence steel are fitted with independently adjustable scrapers. The implements are equipped with a stabiliser wheel, adjustable in height and inclination. Recommended for ploughing hard, stony grounds.