"These blades are oscillating to allow work both forwards and backwards and always have a good angle of attack. They are made of stainless steel, sharpened at the front and the back. The oscillating blades have 2 fixing points (except the 125 mm blade), to be able to be fixed either in the center of the chassis, or offset laterally to the left or right..., for example when using the 2-wheel assembly, with a knife on either side of the crop."