Tiagra shifters are double and triple compatible and Shimano only made one set/model number (ST-4400). So the person asking the question on the ebay auction didn't know what he/she was talking about and neither does the seller.
Now, there is a newer Tiagra shifter set with built in gear selection markers; but from the photos, those are not the newer model ST-4500 shifters.
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Last edited by Moochers_Dad; 12-31-06 at 11:43 AM.