A flip stop enhances safety and helps guarantee consistency with repetitive work. We offer two sizes (see PDF drawings below) that operate in 1/4" t-tracks. The RT model #12-223 is compatible with the ChipsFly Router Table, and the RB model #12-222 is compatible with the Router Boss machine, but they can work in many applications. Check the drawings to determine if the size works for your application. The arm swings in or out as needed, and if it is too long, cut to fit.