Use wedge number 30850 when using the 16K Pro Series 5th Wheel. The 30850 will fit all Pro Series 5th Wheels and will replace the SWW-02. You will need a 3/8" hex head bit to install the 30850 Pro Series Wedge. The 16K Pro Series 5th Wheel will not work with the SWW-2 or the Universal Wedge. They both interfere with the slide bar. DO NOT USE.