freewheel, specifically a 6 speed freewheel.
Edit: I'm an idiot, read the words 6 speeds and zoned out with respect to the rest.
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"
Last edited by himespau; 09-16-11 at 10:49 AM.