They are stronger than any bolt, no worries.
ok... my older Stahlwille in about 15mm or so are just pretty
my new Stahlwille I got last year has a poor surface finish - scratches all over, which they lated over; these are 7, 8, 9, 10mm so small (for brake bleeders)
I dunno anything about the strength but I thought I'd pass this info on for those who want nice looking tools.






