This kit comes with two plastic feather boards, spacers, and the hardware needed for dual or tandem use. The included ¼” hex-bolts provide a means to attach the assembly to ¼” t-track.
Note that our riser plate with a fence kit includes a brush feather board for supporting a workpiece when profiling the workpiece edge with a profile bit. Instead of the brush, you can use this dual feather board. Attach the double feather board to the top t-track in Router Boss sliding bar or to the mortise table T-track platform when vertically mounted on the sliding bar. See an example of use in the 'Mitered Sticking' chapter of the RB manual.
See the assembly diagram