HAFCO SH10H Table Saw fence handle and end cap ALIGN A RIP
This is for a generic branded tablesaw. In Australia it's branded Hafco SB10H but the model seems to be consistent through other brands.
When I got this saw the handle in the Align - a - rip fence was missing. This handle should slot over the two metal tabs left behind (if thats the way your particular saw is broken).
The cover plate is for the end of the rip fence.
Here's a video of the process.