The present invention provides a coupler (201), use of the coupler (201), anda utility vehicle having the coupler (201), the coupler (201) having a body portionand a linearly movable rail (235), arranged to be moved by an actuator, the bodyportion comprising an open jaw (207) arranged to receive a mounting formationof a tool, the rail having a first position in which the rail (235) is retractedrelative to the open jaw (207) and in which a mounting formation can enter a recessdefined by the jaw (207), and an advanced position in which the rail (235) restrictsthe opening to the jaw (207), thereby arranged to trap, in use, the mounting formationin the recess.