A front jaw which includes a housing adapted to be fastened to a ski. A release spring is housed in the housing. A spring extends through a pull rod loaded by the release spring. The pull rod acts through a release plate onto the shorter lever arms of two toggle levers pivotally arranged about vertical axes on a bearing part, and the longer lever arms of which are constructed as sole holders for a ski shoe. The bearing part has a through opening for the pull rod and a front facing support surface which rests at least partially on a rear facing crosswall of the housing. The crosswall is contiguous with an approximately horizontally rearwardly extending section, with the front support surface of the bearing part having two sections adjoining one another in elevational direction, the lower section of which defines an obtuse angle (.alpha.) with the upper section, with the rear facing crosswall of the housing extending essentially vertically and with a rearwardly and downwardly inclined surface being contiguous with the upper section of the front support surface. The bearing part consists of an upper element and a lower element, which elements are in the assembled state of use connected form-lockingly with one another, with the support surface being provided on the front side of both elements of the bearing part. The two toggle levers are supported on the lower element.