They are cast into the bit of plastic, to remove them will leave four large holes - far larger than an M5 rivnut.
@Dammit 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.
They are cast into the bit of plastic, to remove them will leave four large holes - far larger than an M5 rivnut.