This stem, http://cgi.ebay.com/ws/eBayISAPI.dll...e=STRK:MEBI:IT, is conventional steerer size right? I'm a little confused about it because Sheldon's site says that 1" is normal, but is a 7/8 inch wedge-bolt type stem equal to the 1" threadless, thus making the stem I am looking at larger than normal?

I'm very confused.