Front mec went on cannondale just measured tube with calipers and tube is 31.9 if that helps.
Rear mec cogs look ok not sure what they were like in new condition they seem to spin freely.
cheers
I am interested in the rear mech, front mech and cranks. Just the chain rings (on the cranks ) look a little well worn. Would you be open to an offer of £55 for the 3 as I think the rings are probably well on the way out and will likely need replacing.