Our Step Slider is made of 10-gauge steel construction. We use a state-of-the-art automated powder coat system to acid etch the raw base material in preparation for the textured black topcoat. The internals of the step slider are made of stainless steel and aluminum to prevent rusting. This plug and play system is designed to utilize the factory mounting points for a no-drill installation. It uses a stand-alone wire harness, so no splicing or rewiring on your Bronco is necessary. This will allow you to retain your manufacturer **after installation.