My small flange hubs have the thread pitch stamped between the end of the f reewheel threads and the flanges. My High Flange hubs do not. But on some there are grooves. No groove meand ??, one groove means??, and two grooves mean ?? I saw this information at least one time earlier and now cannot find it. If anyone has the answers AND a source please reply. (to list and my Hotmail address) Bruce
Bruce Thomson Spokane WA 99204 (509) 747 4314 Masi3v4me@yahoo.com rapidfire10ring@hotmail.com