25.4mm on the left, 31.8mm in the middle, 26.0mm on the right. Simple and easy. I change around stems and bars a lot, so I appreciate this.
I also sold my old Trek 510 last night, so I have a bit more room in my shop now.
In the middle of the summer, I got an itch for a proper gravel bike. I have several bikes that are perfectly adequate to ride on gravel road...