<<As far as I can tell, no one makes a metric version.>> No one makes a metric rivnut? They aren't THAT hard to find. I can provide a professional quality rivnut tool and the inserts, in 4, 5, 6, and 8mm sizes, for $139.00. I'm sure if you shop around you can find hobbyist quality ones for even less. Darryl Tinnerstet Specialty Automotive McCleary, WA www.delorean-parts.com [Non-text portions of this message have been removed]