DP for the bump.

I got a reply from .243, but it's not what I expected.

"40mm is a standard mtb bb. The other is for bmx."

And a signature.

What? I thought 68 was the "standard?"

So I replied back asking what the 68 means, what the 40 means and why all the bottom brackets are listed as "68x 10X, 13X" etc etc where it seems to be a dimension.

Although, the "68x40" isn't following the same pattern.

And now I wait...