We think that this would be used to protect tail
Fulltron's customer was not the builder of this RV-10, so the owner didn't know for sure. But from what it appeared to us is that this little piece of metal, which was secured to RV-10's tail with the tie-down ring, was to protect the tail of the aircraft from any tail strikes. As a builder of two RV's myself, I think it was a great idea. My RV-14 was designed with a tail protection, aka tailwheel. IF I was building a tricycle plane I would definitely add one of these. It appeared that it would be easy to add to any RV that has a tie-down ring on the tail.
Dan