Maybe I should check the road forum, but I have a feeling you guys will still be more helpful on this sealed BB. Anywho, it says the following things BB-UN73, 68, and BC1.37x24. A quick online search came up with a lot of them for sale, but none of the things seemed to tell about the threading. I've tried to thread it into 3 bikes to see if it fit, 2 of which I'm sure were whatever Japanese bikes used(Miyata and Cierra), and the other was a bike made in the UK in 74(Ellis-Briggs). This BB won't thread into any of those.