I have no idea what size you'd need for the Cyclo, but odds are you can find one. Mine looks similar to this
http://www.nashbar.com/profile.cfm?c...eid=&pagename=
but mine's a cheapo thing that I've had long enough it should at least be ready to head to college. Mine has stepped sizes on each end, so one wrench handles 4 sizes. The one in this link is from Park, which makes most of the pro-level bike tools. These aren't expensive, but your local shop might have less expensive ones as well.