I believe these are the mercurial r9 from 1998. I remember having a pair with the same colorway but without cleats. For indoor soccer I believe but can't find any info online.
I custom made Ronaldo R9s 1998 Nike Mercurial Vapor's : r/bootroom
The nike mercurial 1 R9 model is the boot that changed the world of football equipment. Worn by Ronaldo "o… | Soccer cleats nike, Soccer cleats, Nike football boots