I've used them, It's a good idea if you have a single sided hub. I still really don't like the idea that much though, lock ring comes lose and your fucked. Don't use them on Dura Ace hubs!
@Scrapper 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.
I've used them, It's a good idea if you have a single sided hub.
I still really don't like the idea that much though, lock ring comes lose and your fucked.
Don't use them on Dura Ace hubs!