here's a very fine example of an (early) steel-edge
http://www.mtb-news.de/forum/showthread.php?t=505667
the main triangle is made of True Temper - so there are obviously 4 tubesets for the edge: Tange, True Temper and the 2 Easton sets
http://www.mtb-news.de/forum/showthread.php?t=505667
the main triangle is made of True Temper - so there are obviously 4 tubesets for the edge: Tange, True Temper and the 2 Easton sets