Wraparaound pegs are only compatible with the Riderdesigned Ceremonial fork.
And this is normal because they are optimized to fit into the fork, which makes them much more solid as a continuation of the fork.

A bit like boxed decks and integrated pegs. They are "butted", that is to say that it is more or less thick where it needs to be solid and light.

So these are innovative fork pegs!