A pair of co-operating refining elements intended for use in a disc refiner for the disintegration and refining of lignocellulosic material in a refining gap between two opposed refining discs rotating relative to each other. The refining elements are intended to be positioned directly in front of each other on opposed refining discs. Both refining elements are formed with bars and grooves arranged in a number of restricted zones located radially outside each other, where each refining element comprises at least three zones (A, B, C). The bars in opposed inner zones (A) on the refining elements are angled 10-30° in different direction in relation to the radius of the refining elements, so that the bars on opposed refining elements cross each other. The bars in an intermidate zone (B) on both refining elements form an angle smaller than 15°, preferably smaller than 10°, with the radius. The bars in an opposed outer zone (C9) on the refining elements form an angle with the radius in the interval 10-30° in the same direction.