An installation tool for a two-stage clip is described. The tool includes a base element and a plunger element. The base element can include a plunger installation cavity and a clip receiving cavity. At least a portion of the plunger element can be retainably engaged in base element. The plunger element can be movable within the base element between a retracted position and an extended position. In the extended position, a portion of the plunger element can extend into the clip receiving cavity.