Abstract: A bidirectional pivoting joint comprises pivoting elements which are rotatable relative to one another, specifically in a coaxial arrangement, a cylindrical outer body and a cylindrical inner body and a locking device optionally locking and releasing the rotational movement. The locking device has an annular space between the outer body and the inner body. Provided between annular space surfaces, specifically an inner surface of the outer body and an outer surface of the inner body are radially narrowing and, on the other hand, radially wider, peripheral regions in alternating arrangement. Arranged in the annular space are at least two clamping members which are each adjustable in cross-section in the peripheral direction (u) of the annular space. In a holding state, each clamping member has a first said cross-section and lies in the narrowing peripheral regions against the outer body and the inner body.