Whenever they're from, they work well for me. I wish manufacturers hadn't moved away from triples. I have one Racing T currently on a bike and another campy triple of the same vintage (name decal mostly worn off but rings mostly new) ready to go on my next build whenever I get off my lazy ass and do it.
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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"