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.
NonoLoko🔟🇦🇷 on X: "Nike Mercurial 98' R9😍 https://t.co/cLdNLYUJ3o" / X
NIKE MERCURIAL 1.0 R9 FG (1998) RONALDO * SOCCER CLEATS * US 9 | Ronaldo soccer, Soccer cleats, Nike
Nike Mercurial R9 Ronaldo Soccer Cleats Shoes Size 2 Y Vintage Retro 1998 style | eBay
Nike Air Max Mercurial R9 (OG) - Sneaker Freaker
Mercurial Mk1 - The Original R9 - SoccerBible
OG Vtg 1998 Nike Mercurial Vapor I 1 R9 Sample Cleats Sz. 7.5 Black Superfly CR7 | eBay
Nike Mercurial World Cup football boots from 1998 to 2010
15 years with the Mercurial R9 - The original faces off with the heir
Rare Vintage NIKE Mercurial R9 1998 World Cup Ronaldo FG Boots Cleats Shoes | eBay
The Mercurial R9 – the boot that changed the industry.
15 years with the Mercurial R9 - The original faces off with the heir
Ronaldo Signature R9 Nike Mercurial Tee
I custom made Ronaldo R9s 1998 Nike Mercurial Vapor's : r/bootroom
Unboxing - Nike Mercurial Vapor IX "R9" Special Edition - YouTube