20mm internal and 24mm external on the Spline ones.
22mm internal and 28mm external on the Dynamo ones.
@Saffronspokes 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.
20mm internal and 24mm external on the Spline ones.
22mm internal and 28mm external on the Dynamo ones.