splitting hairs

Again, the difference can seem subtle and sound more like splitting hairs, but the difference is important.

But they have given up splitting hairs over it, because there is no way out.

It was no duty of the gangsman to employ his hanger in splitting hairs.

I want the stir and rush of business instead of splitting hairs about this and that.

You can't wriggle away from the damning fact by splitting hairs about education and breeding.

There is no need to go into long and confusing explanations; there is no use in splitting hairs.