Robertson is a much better design; less chance of rounding out, can work at a slight angle and you can even keep the screw on the driver without holding it in place.
Ok thanks.
@not4sale 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.
Robertson is a much better design; less chance of rounding out, can work at a slight angle and you can even keep the screw on the driver without holding it in place.