ROOF BAR

The invention relates to a roof bar (1) which comprises a profile (2) and a locking member (3) intended to engage in a quadrangular opening (4) positioned on the roof of a vehicle. The locking member (3) comprises a retaining lyre and an asymmetric core (8) rotatably linked in the retaining lyre (5) to move, during the rotation of the core (8), the retaining lyre (5) from a retracted position in which the retaining lyre (5) is removable from the quadrangular opening (4) to an expanded position in which the retaining lyre (5) is locked in the quadrangular opening (4).