Identify rings please

[Fish]

I have a pair of new compression rings, that I am going to e-bay tonight.
#1123 034 3003
Do they fit the 021, 023, or 025?
Thanks

 

[HiOctane]

Those rings fits only 025 with cyl of 42 mm serie.They were built also with a 42.5 mm bore and then they wont fit the latter one.

 

[Fish]

Thanks