an apparatus for the quick clamping of skis of various widths is described , having two parallel guide rods on which a movable clamping jaw is guided . by means of a threaded element and an eccentric lever , the movable clamping jaw is reciprocated in the axial direction and relative to a stationary clamping jaw . in order to attain a substantially constant clamping force with such an apparatus while providing for easy manipulation , a threaded spindle , as the threaded element , is rotatably supported and is joined in a rotationally stiff manner with the eccentric lever via a member which is elastic in the axial direction .