Universal holding clamp for holding objects of any desired type

A holding clamp having two clamping jaws (10, 11), which oppose one another in a mirror image with respect to a base plate (1), and which are rotatable in dependence on one another and on axial pins (3, 4) arranged spaced apart from one another on the base plate (1), wherein the clamping jaws (10, 11) are connected to axial sleeves (5, 6), which are mounted so they are rotatable on the axial pins (3, 4), and a synchronization mechanism for transmitting the pivot movement from one to the other clamping jaw (10, 11) is formed from at least one toothed gearing element, wherein the gearing element is formed by a toothed rack (25), which carries a toothed part (28) on each of its two opposing ends, which has a gear teeth engagement in each case with a partial set of gear teeth (7, 8) in each case on the outer circumference of the axial sleeve (5, 6) of the clamping jaw (10, 11), characterized in that the toothed rack (25) is pre-tensioned by a spring element, which pre-tensions the clamping jaws (10, 11) in the closed position, and the actuation of the clamping jaws (10, 11) is performed by the object to be clamped itself.