Hey,
Wasn't sure to post this here or the How-to section.
The guy I bought the cranks off said they were Primo but there's a couple reasons why I believe they're not.
Differences are; they're 19mm and a completely different axle, they have holes for microdrive but the holes aren't tapped/threaded and they've got the original paint, but no Primo markings.
Similarities are; they have the steel pedal inserts, the dual pinch bolts and the general crank arm design is very similar.
Any help would be appreciated.
Thanks,
Alex