I have a Cannondale F600 with a
27.2 seatpost I believe.

What size seatpost collar do I need?

I don't think they size them the same way as the post

Any help is much appreciated
Thanks

I'd measure the diameter of the seattube where the collar goes.

Does anyone know off hand?

I don't have the bike with me and I'd like to order some stuff from nashbar today or tomorrow so i can ride this weekend

I'd really appreciate it

collar size for a cannondale with a 27.2 post?

thanks