68 is the most common standard, spindle is the critical part and they are very plentiful but you need to get the right length over all.
Originally Posted by
shuru421
So I read I should get the crank first then bb to accommodate..
As I was about to purchase a crankset, (Dura-Ace 7410 172.5) the seller mentioned its for 70mm bb shell. So I stopped and measured mines, which turned out a 68 (6.7-6.8mm). Are these not going to work? I never knew cranks were determined/labeled by 70mm or 68mm shell compatibility as well..