When you finally order a new racquet in future I would suggest ordering a few grommet sets as they are cheap enough as in short time manuf. do not have them avail any more.
you could go route of tennis meanace dot com as they typically have many discontinued ones but be prepared to pay for this. They can even custom make grommet sets, but is it worth it for many?
I typically tell customers to be sure to order grommets with new racquets, as they go fast.
Fittex grommets come in various sizes and you would need to order most to get size and length needed for various size applications.
If you go with the fittex, get a grommet grinder.
Twist the grinder clockwise to separate and pull off turning counter clockwise to remove but sometimes a piece can break off and go inside frame, then you would need to remove trap door in but cap, or if older but cap it may need to be removed to eliminate piece if it breaks off inside as this does happen once in a while
Best to twist it off, and while inside frame hold grommet and twist counterclockwise and hold onto old grommet to remove, seems to work the best for less chance of remanent piece of grommet going inside frame as that's a pain.
I normally tube a worn grommet and every so often use a fittex, and when that is done I tell the customer to get a new racquet before next stringing as grommet set is at the end of its life span. Just what manuf. like to hear.
Manuf. never tell you what current frame grommets will work with older ones, as I'm sure there is compatability between many, but they rather you just purchase a new racquet.