A hinge for a child safety barrier, consisting of first (1,9) and second (2, 10) bracket parts, wherein the first bracket part is formed with a pin (4) whose free end is formed with a shoulder (5). The second bracket part (2, 10) is formed with a hole (7) with two sections, where the first section has a larger diameter than the second section. This provides an edge between the two sections, which, together with the shoulder (5) of the pin, serves as a lock between the two bracket parts. If the length of the pin is larger than the length of the section of the smallest diameter, then the two hinge parts may be displaced relative to each other in the direction of the pin, which is an advantage when the hinge is used in connection with child safety barriers. The two bracket parts of the hinge are formed with respective locking parts which cooperate such that when one bracket part is displaced relative to the other bracket part, the bracket parts may be rotated relative to each other.