Campagnolo Chorus threaded headset included (smooth bearings, but grease is probably a bit old). Sizing is large: 56cm seat tube C-T, 55cm seat tube C-C, 58cm top tube C-C. Very lightweight steel tubing as Columbus EL-OS was the top of the line tubeset (alongside Max) from Columbus in the early 90s, only to be superseded by Genius.
