I just acquired an almost complete cog board for Regina CX freewheels. $6.0 0 per cog, any cog, plus shipping. I haven't offered anything to the list m embers before, so if you want to check out my Ebay creds, I'm listed as rma c42. Cogs are as follows: A1-16,17,18,19,20,22,23,24,25,28,31 -- B6-15,16,17,19,20,21 -- A2-14,15,16,18 --B2-13,14,15,16,17,18 -- C1-12,13,1 4,15,16 --D1-13,14,151,16,17 -- D2-13,14,15 -- B5 -13. On some of these I o nly have singles, others I have several. Thanks for checking it out. Roger MacPhail, Park City, Utah