Available separately and sold individually to suit the T-Track Fence is this fence bracket. It measures 29mm x 76mm x 53mm (H x W x D). The holes allow you to adapt your own sub-fences (including shop-made curved fences) as required, so it can be especially handy for speciality fixturing work. Another use is as a general broad t-track stop in a table. The face is relieved so if your work piece so it will create downward pressure on thick work pieces.
If you want a smooth, non-marring surface to stop again, mount a strip of standard t-track or screw some timber to one or two of these and you can use it as a simple floating long stop.