@TankHenk,
I've never even heard of a "Radical XTR" (from
any generation, let alone from the Graphene Touch era), but I'm located in the U.S.
I suppose it
could be a model/version that was produced for other countries/markets (Europe, Japan, etc.).
However, my suspicion is that the "Radical XTR" is simply a "big-box store" racquet.
The bad news is (if I'm correct with my above assertion), it's
much harder to find grommet sets for the cheaply made "big-box store" frames.
It's usually advisable to simply replace the racquet, as that oftentimes costs less than restringing the same frame.
Even if you could locate the proper grommet set for the Graphene Touch Radical MP (which also happens to be 16x19 and 98sq.in.), you'd have
zero assurances that particular grommet set would be compatible on that Graphene Touch Radical XTR.
The reason: the drilling can/could be different enough that they don't fit.
Then again, they
might fit.
You just have no way of knowing, in advance, unless someone else has actually attempted it... been successful at it...
and conveyed that information somewhere that you can find it.
Best of luck!
BTW, are you certain that it actually needs a new grommet set?
Where/which ones are damaged?
How many, in total?
Just the tie-off grommets, or regular ones too?
Depending on the circumstances/variables, it may be possible/advisable to just use tubing on the bad grommets... or, if/when necessary, actually replace the bad grommets w/ individual Fittex grommets.
The latter would require having/using a grommet grinder, as well as
the correct size replacement Fittex grommets.