except your outer looks like 5 mm (those caps are 4 mm) If you can, get metal ones, and if you go to a bike shop they might find the right ones which have a little stepped bit which fits into the hole in the shifter mount.
@adroit 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.
except your outer looks like 5 mm (those caps are 4 mm) If you can, get metal ones, and if you go to a bike shop they might find the right ones which have a little stepped bit which fits into the hole in the shifter mount.