25.4, aka 1" is also made in a chrome-moly steel , I have one left over from single speed build
using a Schwinn Mesa Runner, it, post, came thru a 'red line' dealer ,
SBS Seattle bike, distributor it is strong ..
I had a foot of post out of the frame.
thicker wall seat tube = smaller ID and seat post.
Last edited by fietsbob; 02-01-11 at 12:42 PM.