The Profiled rail system (1) serves for bridging expansion joints, cavities and as an edging of floor coverings (3). System (1) has at least one web (9) aligned substantially parallel to the floor covering (3), which web (9) engages displaceably in a pocket (10). Pocket (10) is formed by a cover plate (13) overlapping the web (9) and a base plate (14) under the web (9). Pocket (10) is configured in at least two parts (11, 12). The first part (11) forms cover plate (13). The second part (12) forms base plate (14). The first part (11) and the second part (12) are held together. In a first embodiment, a undercut web (20) holds the parts together by a click connection. In a second embodiment, the parts are held together by at least one screw (18).