Abstract: A coupling for connecting two elements such as building elements. The coupling comprises two profile members (4, 5) attached to the elements (2, 3) to be connected, and a spring member (10). Each profile member has an L-shaped opening (6) adapted to receive one edge of the hat-shaped spring member, which comprises a screw (14) at its mid portion. When the screw is tightened, the edge portions of the spring member are securely locked in the L-shaped openings (7) and interlock the two elements. The coupling comprises preferably two spring members (FIG. 1).