Stem and headset sizing

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Archie

Errrr.....
Quick sizing question please people. I want to shorten the quill stem on my old workhorse. It's an '80's Raleigh Cro-mo frame, and after popping the stem out the steerer it's telling me it's a 25.3mm Zoom stem. Sheldon says this fits a 1" headset, but the ebay boys who want to sell me the stem say it fits a 1"1/8 headset (in their listing). I'm inclined to go with Sheldon, but can anyone confirm which one is right?

http://www.sheldonbrown.com/gloss_st-z.html#stem
 
OP
OP
Archie

Archie

Errrr.....
I'll field this. Read the table right in the above link and it says 25.4 is for a 1"1/8 headset.

Thanks guys!
 
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