dont know what size on the bottom
If it's not 1⅛", then it's 1½". You could always have looked on the Leader website where it tells you that
@gbj_tester started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
If it's not 1⅛", then it's 1½". You could always have looked on the Leader website where it tells you that